Academic literature on the topic 'Parametri geologici'
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Journal articles on the topic "Parametri geologici"
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Admassu, Yonathan. "Digital Surface Model-aided Quantitative Geologic Rockfall Rating System (QG-RRS)." Environmental and Engineering Geoscience 25, no. 4 (November 8, 2019): 255–71. http://dx.doi.org/10.2113/eeg-2102.
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ABSTRACT Rockfalls are one of the most common types of slope failures that affect cut slopes along roadways in mountainous regions. The Rockfall Hazard Rating System (RHRS), started in Oregon and adopted by various U.S. states, is used to rate cut slopes with respect to their likelihood of releasing rockfalls. Existing rating systems use semi-quantitative approaches to rate geological and non-geological factors. The main geologic factors are favorability/unfavorability of orientation of discontinuities with respect to the orientation of slope faces and likelihood of differential weathering leading to undercutting of strong rock units. Digital surface models (DSMs) derived from light detection and ranging (LiDAR) and photogrammetry have been used to remotely characterize rock mass. This research introduces an expanded application of DSMs to quantify geologic factors that contribute to the likelihood of rockfall events. The method is hence referred to as the Quantitative Geologic Rockfall Rating System (QG-RRS). Four DSM-based parameters, A, B, C, and D, have been identified to evaluate geologic factors. These parameters quantify the likelihood of discontinuity orientation-controlled failures (parameter A), the degree of undercutting (parameter B), rockfall activity based on rockfall release surfaces (parameter C), and rockfall volume from rockfall voids (parameter D). This rating system, although not inclusive of other non-geological factors, appears to provide reproducible quantitative estimation of geologic factors that control rockfall generation.
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Tague, C. L., J. S. Choate, and G. Grant. "Parameterizing sub-surface drainage with geology to improve modeling streamflow responses to climate in data limited environments." Hydrology and Earth System Sciences 17, no. 1 (January 29, 2013): 341–54. http://dx.doi.org/10.5194/hess-17-341-2013.
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Abstract. Hydrologic models are one of the core tools used to project how water resources may change under a warming climate. These models are typically applied over a range of scales, from headwater streams to higher order rivers, and for a variety of purposes, such as evaluating changes to aquatic habitat or reservoir operation. Most hydrologic models require streamflow data to calibrate subsurface drainage parameters. In many cases, long-term gage records may not be available for calibration, particularly when assessments are focused on low-order stream reaches. Consequently, hydrologic modeling of climate change impacts is often performed in the absence of sufficient data to fully parameterize these hydrologic models. In this paper, we assess a geologic-based strategy for assigning drainage parameters. We examine the performance of this modeling strategy for the McKenzie River watershed in the US Oregon Cascades, a region where previous work has demonstrated sharp contrasts in hydrology based primarily on geological differences between the High and Western Cascades. Based on calibration and verification using existing streamflow data, we demonstrate that: (1) a set of streams ranging from 1st to 3rd order within the Western Cascade geologic region can share the same drainage parameter set, while (2) streams from the High Cascade geologic region require a different parameter set. Further, we show that a watershed comprised of a mixture of High and Western Cascade geologies can be modeled without additional calibration by transferring parameters from these distinctive High and Western Cascade end-member parameter sets. More generally, we show that by defining a set of end-member parameters that reflect different geologic classes, we can more efficiently apply a hydrologic model over a geologically complex landscape and resolve geo-climatic differences in how different watersheds are likely to respond to simple warming scenarios.
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Hung, Yin-Chun, Chih-Ping Lin, Chin-Tan Lee, and Ko-Wei Weng. "3D and Boundary Effects on 2D Electrical Resistivity Tomography." Applied Sciences 9, no. 15 (July 24, 2019): 2963. http://dx.doi.org/10.3390/app9152963.
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Electrical resistivity tomography (ERT) is one of the most widely used geophysical methods in geological, hydrogeological, and geo-environmental investigations. Although 3D ERT is now available, 2D ERT remains state-of-the-practice due to its simplicity in fieldwork and lower space requirements. 2D ERT assumes that the ground condition is perpendicular to the survey line and outside the survey line is homogeneous. This assumption can often be violated in conditions such as geologic strikes not perpendicular to the survey line and topographic changes or buried objects near the survey line. Possible errors or artifacts in the 2D resistivity tomogram arising from violating the 2D assumption are often overlooked. This study aimed to numerically investigate the boundary effects on 2D ERT under various simplified conditions. Potential factors including resistivity contrast, depth and size of buried objects, and electrode spacing were considered for the parametric studies. The results revealed that offline geologic features may project onto the 2D tomogram to some extent, depending on the aforementioned factors. The mechanism and implications of boundary effects can be drawn from these parametric studies.
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Evans, David G., Peter N. Schweitzer, and Martin S. Hanna. "Parametric cubic splines and geologic shape descriptions." Journal of the International Association for Mathematical Geology 17, no. 6 (August 1985): 611–24. http://dx.doi.org/10.1007/bf01030856.
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Jarc, Simona. "Statistical approach to interpretation of geochemical data of stream sediment in Pleše mining area." Geologija 65, no. 2 (December 21, 2022): 225–35. http://dx.doi.org/10.5474/geologija.2022.013.
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The Ba, Pb and Zn ore deposit Pleše near Ljubljana is one of the formerly productive mines. The stream sediments were sampled and analysed by XRF to establish the effect of grain size, mineralization, and downstream location of sampling sites on geochemical composition based on various statistical analyses. Statistical analyses of the geochemical data confirm the impact of mineralization. The parametric t-test, non-parametric Mann-Whitney test and cluster analysis showed only minor differences in the geochemical composition of the samples with different grain sizes (< 0.063 mm and 0.063-2 mm). The parametric and non-parametric correlation coefficients as well as cluster analysis indicate that the contents of Si, Al, K, Rb, and Fe are associated with weathered rock forming minerals such as micas, and clay minerals, whereas Nb and Zr are associated with minerals resistant to weathering. Ca and Mg are associated with carbonates. S, Ba, Sr, Pb, Zn, and Mn indicate local mineralization with sulphates and sulphides. The results of the t-test and analysis of variance, Mann-Whitney tests and Kruskal-Wallis ANOVA of the groups established by the cluster analysis confirm that the contents of Ba, Pb and Sr have a statistically significant influence on the classification of the cluster group - i.e., the influence of sediment mineralization. There are no differences in elemental contents in the sediment samples downstream. The statistical approach to evaluate the geochemical data has proven useful and provides a good basis for further interpretation.
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Tague, C. L., J. S. Choate, and G. Grant. "Parameterizing sub-surface drainage with geology to improve modeling streamflow responses to climate in data limited environments." Hydrology and Earth System Sciences Discussions 9, no. 7 (July 18, 2012): 8665–700. http://dx.doi.org/10.5194/hessd-9-8665-2012.
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Abstract. Hydrologic models are one of the core tools used to project how water resources may change under a warming climate. These models are typically applied over a range of scales, from headwater streams to higher order rivers, and for a variety of purposes, such as evaluating changes to aquatic habitat or reservoir operation. Most hydrologic models require streamflow data to calibrate subsurface drainage parameters. In many cases, long-term gage records may not be available for calibration, particularly when assessments are focused on low order stream reaches. Consequently, hydrologic modeling of climate change impacts is often performed in the absence of sufficient data to fully parameterize these hydrologic models. In this paper, we assess a geologic-based strategy for assigning drainage parameters. We examine the performance of this modeling strategy for the McKenzie River watershed in the US Oregon Cascades, a region where previous work has demonstrated sharp contrasts in hydrology based primarily on geological differences between the High and Western Cascades. Based on calibration and verification using existing streamflow data, we demonstrate that: (1) a set of streams ranging from 1st to 3rd order within the Western Cascade geologic region can share the same drainage parameter set, and (2) streams from the High Cascade geologic region, however, require a distinctive parameter set. Further, we show that a watershed comprised of a mixture of High and Western Cascade geology can be modeled without additional calibration by transferring parameters from these distinctive High and Western Cascade end-member parameter sets. Using this geologically-based parameter transfer scheme, our model predictions for all watersheds capture dominant historic streamflow patterns, and are sufficiently accurate to resolve geo-climatic differences in how these different watersheds are likely to respond to simple warming scenarios.
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Febriarta, Erik, Denni Susanto, Aditya Pandu Wicaksono, and Ajeng Larasati. "Kajian metode deterministik untuk zonasi kerawanan gerakan tanah di Labuan Bajo Nusa Tenggara Timur." Majalah Geografi Indonesia 36, no. 1 (March 31, 2022): 41. http://dx.doi.org/10.22146/mgi.71839.
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Abstrak Karakteristik morfologi berbukit dengan kemiringan lereng curam berpotensi atau rawan membentuk kejadian longsor (gerakan tanah). Tujuan kajian ini adalah menentukan zona kerawanan gerakan tanah dengan pendekatan spasial deterministik, yakni analisis sifat faktor kelerengan menggunakan parameter kemiringan lereng, jenis batuan, ketebalan pelapukan batuan, struktur geologi (jarak terhadap sesar), sifat geoteknik (ukuran butir), dan kegempaan regional. Selain pengukuran di lapangan, data berikut juga diperoleh dari data sekunder, yakni kemiringan lereng (konversi digital elevation model), jenis batuan, ketebalan pelapukan, dan sifat geoteknik (Pusat Survei Geologi), serta kedalaman air tanah (BAPPEDA). Struktur geologi diperoleh dari Pusat Survei Geologi dan analisis jarak menggunakan sistem informasi geografis, sedangkan intensitas hujan dari BMKG dan nilai kegempaan dari BMKG dan Badan Geologi. Berdasarkan hasil analisis, daerah kajian (43,3 km2) memiliki empat zona kerawanan gerakan tanah, yakni sangat rendah (34,73%), rendah (20,98%), sedang (26,78%), dan tinggi (17,51%). Secara umum, Labuhan Bajo memiliki kerawanan gerakan tanah yang sangat rendah (34,73%). Abstract Hilly morphology with steep slopes is a factor of susceptibility to landslides (mass movements). The study was designed to determine mass movement susceptibility zones using a deterministic spatial approach by analyzing slope factors, namely slope gradient, rock type, rock weathering depth, geological structure (distance to fault), geotechnical properties (grain size), and regional seismicity. Aside from measurements in the field, these parameters were also measured from secondary data: slope gradient (conversion of digital elevation model), rock type, weathering type, geotechnical properties (PSG), and groundwater depth (BAPPEDA). In addition, geological structures were obtained from PSG and geographic information systems (distance analysis), rainfall intensity was from BMKG, and seismicity values were from BMKG and the Geological Agency. Based on the analysis results, the study area (43.3 km2) had four susceptibility zones: very low (34.73%), low (20.98%), medium (26.78%), and high (17.51%). In general, Labuan Bajo had a very low susceptibility to mass movements.
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Li, An-Bo, Hao Chen, Xiao-Feng Du, Guo-Kai Sun, and Xian-Yu Liu. "Parametric Modeling Method for 3D Symbols of Fold Structures." ISPRS International Journal of Geo-Information 11, no. 12 (December 13, 2022): 618. http://dx.doi.org/10.3390/ijgi11120618.
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Most fabrication methods for three-dimensional (3D) geological symbols are limited to two types: directly increasing the dimensionality of a 2D geological symbol or performing appropriate modeling for an actual 3D geological situation. The former can express limited vertical information and only applies to the three-dimensional symbol-making of point mineral symbols, while the latter weakens the difference between 3D symbols and 3D geological models and has several disadvantages, such as high dependence on measured data, redundant 3D symbol information, and low efficiency when displayed in a 3D scene. Generating a 3D geological symbol is represented by the process of constructing a 3D geological model. This study proposes a parametric modeling method for 3D fold symbols according to the complexity and diversity of the fold structures. The method involves: (1) obtaining the location of each cross-section in the symbol model, based on the location parameters; (2) constructing the middle cross-section, based on morphological parameters and the Bezier curve; (3) performing affine transformation according to the morphology of the hinge zone and the middle section to generate the sections at both ends of the fold; (4) generating transition sections of the 3D symbol model, based on morphing interpolation; and (5) connecting the point sets of each transition section and stitching them to obtain a 3D fold-symbol model. Case studies for different typical fold structures show that this method can eliminate excessive dependence on geological survey data in the modeling process and realize efficient, intuitive, and abstract 3D symbol modeling of fold structures based on only a few parameters. This method also applies to the 3D geological symbol modeling of faults, joints, intrusions, and other geological structures and 3D geological modeling of typical geological structures with a relatively simple spatial morphology.
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Davydov, Vadim, and Andrei Nazarov. "Geophysical survey at the southern end of the Degtyarsky pyrite deposit." Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal, no. 2 (March 30, 2020): 37–43. http://dx.doi.org/10.21440/0536-1028-2020-2-37-43.
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Research aim is to study features peculiar to geophysical fields over the main geological features of the southern part of the Degtyarsky pyrite deposit at the Middle Urals. Methodology. Electromagnetic survey included symmetrical electric profiling (SEP) with ERA-MAX equipment (ERA Research and Production Enterprise, St. Petersburg) and rapid audio-magnetotelluric sounding (ATMS) with OMAR-2m wideband receiver (Institute of Geophysics UB RAS, Ekaterinburg). Magnetic survey was carried out with the help of the proton procession magnetometer GSM-19T (GEM Systems, Canada), gamma field survey was carried out with a survey meter SRP-68-01 (Electron, Zhovti Vody). Results. According to the results of observational analysis, high-quality sections of electrophysical parameters of the environment were constructed at the parametric profile together with the charts of other geophysical fields. The studies have shown significant changes of resistivity and potential fields anomalies over various geological features of the ore field. Summary. Geophysical indications of border line of the main geologic features have been determined. Excessive electrical conductivity of ore control tectonic structures and radiation anomaly have been revealed in the promises of the ore body, which can serve a prospecting criterion for a similar ore body. Geophysical results are well within the existing geological data on the Degtyarsky mine.
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Mishra, Srikanta, Yagna Deepika Oruganti, and Joel Sminchak. "Parametric analysis of CO2 geologic sequestration in closed volumes." Environmental Geosciences 21, no. 2 (June 2014): 59–74. http://dx.doi.org/10.1306/eg.03101413009.
Full textDissertations / Theses on the topic "Parametri geologici"
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Giovani, Concettina. "Uso dei sistemi informativi territoriali per lo studio della distribuzione della concentrazione di radon e dei parametri ad essa correlati in Friuli Venezia Giulia." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4512.
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2009/2010Scopo del lavoro Scopo principale di questo lavoro è quello di dimostrare l’importanza dell’uso dei sistemi informativi territoriali nello studio della distribuzione della concentrazione di radon e dei parametri ad essa correlati. Il lavoro procede attraverso l’analisi della distribuzione della concentrazione di radon indoor, nel suolo e nelle acque, sul territorio del Friuli Venezia Giulia, utilizzando gli strumenti messi a disposizione dalla geomatica e dai sistemi informativi territoriali, con lo scopo ultimo di mettere a disposizione delle amministrazioni pubbliche dati di facile interpretazione e fruizione per la valutazione del rischio da radon per la popolazione della regione. Effettuare uno studio di questo genere sul territorio del Friuli Venezia Giulia risulta particolarmente significativo a causa delle caratteristiche che il territorio presenta sia dal punto di vista della concentrazione di radon indoor, che risulta tra le più alte in Italia, che dal punto di vista delle caratteristiche geologiche che risultano estremamente variabili nell’ambito del territorio regionale e peculiari in ambito nazionale ed europeo. Anche le caratteristiche del parco edilizio della regione risultano essere tali da influenzare notevolmente la concentrazione di radon indoor. Ai fini della definizione della mappa di rischio è necessario analizzare le eventuali correlazioni del contenuto di radon, con particolare riferimento a quello indoor, con i principali parametri geologici, geomorfologici ed idrogeologici senza trascurare l’influenza dei parametri edilizi. Riassunto dell’attività La prima parte della ricerca si è svolta nell’ambito della campagna di campionamento e misura della concentrazione di radon indoor condotta da ARPA Friuli Venezia Giulia, con l’obiettivo di determinare le radon prone areas in regione ai sensi del D.Lgs.241/00. Tale campagna è stata materialmente avviata nel 2005 e le misure sono state completate alla fine del 2007. Dopo una fase iniziale di acquisizione dei suddetti dati e di ricerca bibliografica, l’attività è consistita essenzialmente in cinque momenti: a. creazione e popolamento della banca dati del sistema informativo territoriale per quanto riguarda le misure di radon indoor ed i relativi dati sugli edifici ed elaborazione dei dati stessi mediante l’utilizzo della Carta Tecnica Regionale e della Carta Geologica Regionale; b. analisi della distribuzione della concentrazione del radon indoor e delle sue possibili modalità di rappresentazione spaziale; c. analisi dell’eventuale correlazione dei parametri relativi agli edifici ed ai locali di misura con la concentrazione radon indoor allo scopo di costruire un sottoinsieme di edifici omogenei dal punto di vista delle caratteristiche costruttive che influenzano la concentrazione di radon indoor; d. analisi dell’eventuale correlazione dei parametri geologici con la distribuzione della concentrazione di radon indoor; e. costruzione di sottoinsiemi di abitazioni, omogenei tra loro, in cui i parametri edilizi rendessero, rispettivamente, massime e minime le concentrazioni di radon indoor ed analisi della distribuzione della concentrazione di radon per i diversi sottoinsiemi in funzione dei diversi parametri geologici. Inoltre vengono riportati i dati relativi alla distribuzione del radon nelle acque potabili e sorgive del Friuli Venezia Giulia. Sono anche stati analizzati i dati relativi ad un progetto complementare alla campagna radon prone areas e relativi ad una campagna di misura di radon nel suolo: sono stati georeferenziati i dati relativi alle concentrazioni di radon nel suolo per la provincia di Udine e sono state elaborate le prime mappe di distribuzione. I dati relativi alla campagna radon prone areas in Friuli Venezia Giulia sono stati pubblicati sul sito web di ARPA FVG. Risultati Sulla base dell’analisi dei risultati di oltre 10000 misure di radon indoor effettuate in circa 2500 abitazioni e del confronto di tali risultati con le caratteristiche geologiche, geomorfologiche ed idrogeologiche del territorio del Friuli Venezia Giulia, è stato possibile costruire una mappa della distribuzione della concentrazione di radon negli edifici del Friuli Venezia Giulia e correlarla con i principali parametri analizzati. Sono state altresì riportate le mappe di distribuzione della concentrazione di radon nelle acque potabili e sorgive del Friuli Venezia Giulia ed è stata costruita ed analizzata la mappa di distribuzione della concentrazione di radon nel suolo per la provincia di Udine. Dal punto di vista geologico i principali parametri analizzati sono stati la consistenza del substrato (sciolto o roccioso), la sua tessitura, l’età delle unità litostratigrafiche e le unità litostratigrafiche stesse, i lineamenti tettonici e la sismicità. Dal punto di vista geomorfologico la regione è stata divisa in 9 aree geomorfologicamente omogenee ed è stato considerato il fenomeno del carsismo con riferimento sia al carso classico che alle restanti aree carsificate della regione. Da ultimo sono stati indagati gli aspetti idrogeologici: la permeabilità, le risorgive e la profondità della falda acquifera. Ogni aspetto è stato analizzato e sono state indagate le eventuali correlazioni con le concentrazioni di radon indoor. E’ stato possibile valutare bene l’importanza di alcuni parametri soltanto dopo aver disaggregato i dati analizzando separatamente zone geomorfologicamente diverse fra di loro. I principali risultati ottenuti possono essere così riassunti: a. il parametro più importante è risultato essere la permeabilità del suolo con riferimento sia alla granulometria del substrato sciolto che alla eventuale carsificazione del substrato roccioso; b. altri parametri come le differenze nelle unità litostratigrafiche e la loro età, la presenza di lineamenti tettonici e la sismicità, la presenza della linea delle risorgive e la profondità di falda, non sono risultate significative ai fini della correlazione con il radon indoor in Friuli Venezia Giulia; c. è stato possibile effettuare alcune differenziazioni all’interno della fascia alpina e prealpina: concentrazioni più elevate sono state misurate nelle Prealpi Carniche e più basse nelle Prealpi Giulie. I valori più elevati misurati all’interno di abitazioni costruite su substrato sciolto sono stati misurati nella fascia alpina e prealpina e quelli più bassi nella Bassa pianura friulana e nella provincia di Trieste. Per quanto riguarda i parametri edilizi è stata analizzata l’eventuale correlazione dei parametri stessi con la concentrazione di radon indoor. Sono risultati significativi i seguenti parametri: posizione del locale in cui era posto il dosimetro rispetto al suolo, tipo di contatto suolo-edificio, anno di costruzione (pre o post terremoto del 1976), presenza di pietra nei muri. Sono stati infine creati due diversi data set con parametri edilizi omogenei ed è stata effettuata l’analisi della distribuzione del radon indoor nei due casi mettendo in luce le diversità di distribuzione, oltre che di concentrazione di radon, per le diverse tipologie costruttive. Considerazioni conclusive e prospettive future Dal punto di vista dell’utilizzo dei sistemi informativi, essi sono stati usati in tutte le fasi dello studio, in particolare: Ø nella strategia di campionamento, nella definizione delle maglie e nell’estrazione del campione, nel posizionamento dei dosimetri e nella georeferenziazione dei siti, nella restituzione e nella pubblicazione dei dati; Ø nei controlli preliminari sui set di dati da analizzare; Ø nella creazione di nuovi set standard di dati; Ø nella ricerca di correlazione della concentrazione di radon con parametri edilizi e geologici; Ø nell’analisi della distribuzione della concentrazione del radon e nelle elaborazioni geostatistiche. Sarebbe stato molto più oneroso, ed in molti casi impossibile, eseguire lo stesso studio senza l’ausilio del SIT. Le potenzialità del SIT creato sono molteplici, ad esempio: utilizzo a fini amministrativi (definizione sul Bollettino Ufficiale Regionale delle radon prone areas, creazione di mappe di rischio, ecc.) ed epidemiologici; creazione di mappe nazionali ed europee, analisi geostatistiche ecc. Il SIT costruito risulta essere un sistema ricco di potenzialità, una piccola parte delle quali è stata sfruttata per le analisi che sono state riportate in questo lavoro. Le prospettive future possono comprendere sia l’ampliamento ed il completamento degli studi intrapresi, che lo svolgimento di molteplici nuove attività di ricerca che la struttura dei dati permette. A titolo di esempio si tenga presente, per quanto riguarda il completamento delle attività svolte, che sono state analizzate solo una parte delle eventuali correlazioni dei dati di concentrazione di radon indoor con i parametri geologici ed edilizi. Va inoltre sottolineata la possibilità di utilizzare, oltre alla Carta Geologica Regionale in scala 1:150000, la cartografia CARG 1:5000. L’uso di tale cartografia potrebbe permettere l’esecuzione di studi di dettaglio allo scopo di evidenziare correlazioni con eventuali altri parametri geologici non ancora considerati. Particolarmente promettente appare la possibilità, dimostrata dall’analisi dei diversi set di dati creati, di normalizzare il parco edilizio regionale in funzione delle caratteristiche costruttive, al fine di disporre di un numeroso set di dati per le analisi, eventualmente multivariate, per la valutazione dell’influenza dei diversi parametri geologici. Sono inoltre sicuramente possibili ulteriori analisi geostatistiche sui risultati delle misure, utili per la definizione delle radon prone areas, ma anche per la redazione di una mappa del “rischio radon” in Friuli Venezia Giulia, analogamente a quanto fatto in altri Paesi. I dati contenuti all’interno del SIT possono inoltre essere utilizzati, insieme a quelli prodotti da altre realtà territoriali ed analogamente a quanto già fatto per la parte relativa alle concentrazioni di radon indoor nelle strutture scolastiche regionali, per la redazione di mappe interregionali, nazionali od europee.
XXIII Ciclo
1960
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Mirabile, Benjamin T. "Geologic feature prediction using roof bolter drilling parameters." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3216.
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Thesis (M.S.)--West Virginia University, 2003.Title from document title page. Document formatted into pages; contains xii, 84 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 83).
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Hajdarwish, Ala' M. "Geologic Controls of Shear Strength Behavior of Mudrocks." Kent State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=kent1162259344.
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SECCI, ROMINA. "Comparazione fra metodiche per la valutazione della vulnerabilità all’inquinamento degli acquiferi. Applicazione all’acquifero del Sulcis Iglesiente." Doctoral thesis, Università degli Studi di Cagliari, 2011. http://hdl.handle.net/11584/266322.
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The assessment of the vulnerability of aquifers is a key instrument for planning the
methods of environmental resources protection. This research compares three scoring and
weighting methods to assess the intrinsic vulnerability of the carbonate type aquifer
systems. In particular, we have applied the SINTACS method (Civita, 1994), the EPIK
method (Doerfliger N., Jeannin PY, Zwahlen F., 1999) and the COP method (Vias et al.,
2006) to the carbonate Sulcis Iglesiente aquifer. The study focused on the area of the socalled
"small Metal ring”, near the town of Iglesias, in the south of Sardinia. The
peculiarity of this area lies in the fact that for millennia it has been exploited by mining of
lead-zinc mines, among the most productive in the world. These activities have left a
precarious environment, as potentially polluting landfill opencast mining sites are scattered
throughout the area. The analysis of the results has led to develop a methodology for
assessing the vulnerability more effective than the others and to highlight the critical issues
of each method.
With the identification of those areas inherently more vulnerable, we laid the ground for
the strategic planning of reclamation of the most vulnerable sites.
The study is also preparatory to a larger scale research aimed at the protection and
sustainable exploitation of the environment and water resources in the area.
-----------------------------------------------------------------------------------------------------------------La valutazione della vulnerabilità degli acquiferi è uno strumento determinante per la
pianificazione di metodi di salvaguardia delle risorse ambientali. In questa ricerca si è
effettuata una comparazione fra tre metodi a punteggi e pesi per la valutazione della
vulnerabilità intrinseca dei sistemi acquiferi di tipo carbonatico. In particolare si sono
applicati il metodo SINTACS (Civita,1994), il metodo EPIK (Doerfliger N., Jeannin P.Y.,
Zwahlen F., 1999) ed il metodo COP (Vias et al. , 2006) all’acquifero carbonatico del
Sulcis Iglesiente. Lo studio si è incentrato sulla zona del cosiddetto “piccolo anello
metallifero”, in prossimità del comune di Iglesias, situato nel sud della Sardegna. La
peculiarità di questa zona risiede nel fatto che per millenni è stata sfruttata dalle attività
estrattive delle miniere piombo-zincifere, tra le più produttive al mondo. Queste attivitàhanno lasciato una situazione di precarietà ambientale, in quanto tutto il territorio è
disseminato di discariche minerarie a cielo aperto potenzialmente inquinanti.
L’analisi dei risultati ottenuti ha portato a definire una metodologia di valutazione della
vulnerabilità più efficace delle altre e a mettere in evidenza le criticità di ogni metodo. Con
l’individuazione delle zone del territorio intrinsecamente più vulnerabili si sono poste le
basi per la pianificazione strategica di bonifiche dei siti maggiormente vulnerabili.
Lo studio inoltre è propedeutico ad una ricerca a scala più vasta tesa alla tutela e ad un
possibile sfruttamento ecosostenibile dell’ambiente e delle risorse idriche del territorio.
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Barahona-Palomo, Marco. "Estimation of aquifers hydraulic parameters by three different tecniques: geostatistics, correlation and modeling." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/144941.
Full textAbstract:
Characterization of aquifers hydraulic parameters is a difficult task that requires field information. Most of the time the hydrogeologist relies on a group of values coming from different test to interpret the hydrogeological setting and possibly, generate a model. However, getting the best from this information can be challenging.
In this thesis, three cases are explored. First, hydraulic conductivities associated with measurement scale of the order of 10−1 m and collected during an extensive field campaign near Tübingen, Germany, are analyzed. Estimates are provided at coinciding locations in the system using: the empirical Kozeny-Carman formulation, providing conductivity values, based on particle size distribution, and borehole impeller-type flowmeter tests, which infer conductivity from measurements of vertical flows within a borehole. Correlation between the two sets of estimates is virtually absent. However, statistics of the natural logarithm of both sets at the site are similar in terms of mean values and differ in terms of variogram ranges and sample variances. This is consistent with the fact that the two types of estimates can be associated with different (albeit comparable) measurement (support) scales. It also matches published results on interpretations of variability of geostatistical descriptors of hydraulic parameters on multiple observation scales. The analysis strengthens the idea that hydraulic conductivity values and associated key geostatistical descriptors inferred from different methodologies and at similar observation scales (of the order of tens of cm) are not readily comparable and should not be embedded blindly into a flow (and eventually transport) prediction model.
Second, a data-adapted kernel regression method, originally developed for image processing and reconstruction is modified and used for the delineation of facies. This non-parametric methodology uses both the spatial and the sample value distribution, to produce for each data point a locally adaptive steering kernel function, self-adjusting the kernel to the direction of highest local spatial correlation. The method is shown to
outperform the nearest-neighbor classification (NNC) in a number of synthetic aquifers whenever the available number of data is small and randomly distributed. Still, in the limiting case, when the domain is profusely sampled, both the steering kernel method and the NNC method converge to the true solution. Simulations are finally used to explore which parameters of the locally adaptive kernel function yield optimal reconstruction results in typical field settings. It is shown that, in practice, a rule of thumb can be used to get suboptimal results, which are best when key prior information
such as facies proportions is used.
Third, the effect of water temperature fluctuation on the hydraulic conductivity profile of coarse sediments beneath an artificial recharge facility is model and compared with field data. Due to the high permeability, water travels at a high rate, and therefore also water with different temperature is also present on the sediment under the pond at different moments, this translates into different hydraulic conductivity values within the same layer, even though all the other parameters are the same for this layer. Differences of almost 79% in hydraulic conductivity were observed for the model temperatures (2 °C – 25 °C). This variation of hydraulic conductivity in the sediment below the infiltration pond when water with varying temperature enters the sediment, causes the infiltration velocity to change with time and produces the observed fluctuation on the field measurements.La caracterización de los parámetros hidráulicos de los acuíferos es una tarea difícil que requiere información de campo. La mayoría de las veces el hidrogeólogo se basa en un grupo de valores procedentes de diferentes pruebas para interpretar la configuración hidrogeológica y posiblemente , generar un modelo . Sin embargo, obtener lo mejor de esta información puede ser un reto. En esta tesis se analizan tres casos. Primero, se analizan las conductividades hidráulicas asociadas a una escala de medición del orden de 10 m− 1 y obtenidas durante una extensa campaña de campo cerca de Tübingen, Alemania. Las estimaciones se obtuvieron en puntos coincidentes en el sitio, mediante: la formulación empírica de Kozeny - Carman, proporcionando valores de conductividad, con base en la distribución de tamaño de partículas y las pruebas del medidor de caudal de tipo impulsor en el pozo, el cual infiere las medidas de conductividad a partir de los flujos verticales dentro de un pozo. La correlación entre los dos conjuntos de estimaciones es prácticamente ausente. Sin embargo, las estadísticas del logaritmo natural de ambos conjuntos en el lugar son similares en términos de valores medios y difieren en términos de rangos del variograma y varianzas de muestra. Esto es consecuente con el hecho de que los dos tipos de estimaciones pueden estar asociados con escalas de apoyo de medición diferentes (aunque comparables). También coincide con los resultados publicados sobre la interpretación de la variabilidad de los descriptores geoestadísticos de parámetros hidráulicos en múltiples escalas de observación . El análisis refuerza la idea de que los valores de conductividad hidráulica y descriptores geoestadísticos clave asociados al inferirse de diferentes metodologías y en las escalas de observación similares (en el caso del orden de decenas de cm) no son fácilmente comparables y debe ser utilizados con cuidado en la modelación de flujo (y eventualmente, el transporte) del agua subterránea. En segundo lugar, un método de regresión kernel adaptado a datos, originalmente desarrollado para el procesamiento y la reconstrucción de imágenes se modificó y se utiliza para la delimitación de las facies. Esta metodología no paramétrica utiliza tanto la distribución espacial como el valor de la muestra, para producir en cada punto de datos una función kernel de dirección localmente adaptativo, con ajuste automático del kernel a la dirección de mayor correlación espacial local. Se demuestra que este método supera el NNC (por su acrónimo en inglés nearest-neighbor classification) en varios casos de acuíferos sintéticos donde el número de datos disponibles es pequeño y la distribución es aleatoria. Sin embargo, en el caso límite, cuando hay un gran número de muestras, tanto en el método kernel adaptado a la dirección local como el método de NNC convergen a la solución verdadera. Las simulaciones son finalmente utilizadas para explorar cuáles parámetros de la función kernel localmente adaptado dan resultados óptimos en la reconstrucción de resultados en escenarios típicos de campo. Se demuestra que, en la práctica, una regla general puede ser utilizada para obtener resultados casi óptimos, los cuales mejoran cuando se utiliza información clave como la proporción de facies. En tercer lugar, se modela el efecto de la fluctuación de la temperatura del agua sobre la conductividad hidráulica de sedimentos gruesos debajo de una instalación de recarga artificial y se compara con datos de campo. Debido a la alta permeabilidad, el agua se desplaza a alta velocidad alta, y por lo tanto, agua con temperatura diferente también está presente en el sedimento bajo el estanque en diferentes momentos, esto se traduce en diferentes valores de conductividad hidráulica dentro de la misma capa, a pesar de que todos los demás parámetros son los mismos para esta capa. Se observaron diferencias de casi 79 % en la conductividad hidráulica en el modelo, para las temperaturas utilizadas (2 º C - 25 º C ). Esta variación de la conductividad hidráulica en el sedimento por debajo de la balsa de infiltración cuando el agua de temperatura variable entra en el sedimento, causa un cambio en la velocidad de infiltración con el tiempo y produce las fluctuacciones observadas en las mediciones de campo.
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Guglielmi, Marco. "Analisi dei risultati di un’indagine InSAR sul territorio collinare e montuoso dell’Emilia-Romagna centro-orientale." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
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Questo lavoro di tesi analizza i parametri geologici, morfologici e le velocità di spostamento di corpi franosi, che sono stati rilevati da remoto attraverso la tecnica di analisi inSAR, della Regione Emilia-Romagna che si sono riattivati o attivati per la prima volta nel periodo di studio che va da aprile-2015 a maggio-2019. Questi corpi sono disposti lungo la catena dell'Appennino Settentrionale all'interno di aree di studio che sono a loro volta collocate all'interno di 10 bacini idrografici della Regione stessa. Attraverso diversi grafici si è analizzato quali sono i parametri geomorfologici e i fattori ambientali che regolano l'attivazione o meno di frane lungo i versanti dell'erogene Appenninico.
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MARTINELLI, MATTIA. "From outcrop to fracture model. A multidisciplinary approach to characterize fracture networks from outcrop analogues in carbonates affected by extensional tectonics." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/271026.
Full textAbstract:
I network di fratture hanno un ruolo fondamentale nel controllo della permeabilità e del flusso dei geo-fluidi (e.g. idrocarburi, acqua, fluidi idrotermali ecc.). Nel sottosuolo i parametri delle fratture vengono solitamente caratterizzati utilizzando dati di pozzo e dati sismici, i quali però sono divisi da un salto di scala. Infatti, i dati di pozzo sono sparsi e parziali mentre anche la sismica migliore non è in grado di identificare fratture con dimensione minori di 200 metri. Gli analoghi esumati con dimensioni chilometriche posso aiutare a colmare questo divario permettendo di raccogliere una grande quantità di dati a scale differenti.
In questa tesi di dottorato abbiamo caratterizzato il network di fratture nei carbonati delle isole di Malta e Gozo, che si trovano all’interno della Piattaforma Pelagica nel foreland della catena Appeninico-Magrebide e sono degli spettacolari analoghi esumati di reservoir di idrocarburi fratturati sviluppatisi in ambienti tettonici estensionali. La stratigrafia delle isole maltesi è caratterizzata dalla presenza di differenti tipi di carbonati di età compresa tra il tardo Oligocene e il Miocene superiore., tagliati da due set di faglie normali (ENE-WSW e WNW-ESE) con rigetti verticali che possono raggiungere i 210 metri. Dicchi nettuniani associati a faglie normali con rigetto limitato (meno di 5 metri) sono inoltre presenti nelle unità più antiche. In questa tesi abbiamo utilizzato un approccio multidisciplinare che ci ha permesso di effettuare diversi tipi di studi che sono presentati nei quattro capitoli della tesi.
i) Nel primo capitolo abbiamo ricostruito l’evoluzione tettonica e geodinamica delle isole di Malta e Gozo e della Piattaforma Pelagica a partire dal tardo Oligocene fino al Pliocene. Questo ci ha permesso inoltre di ricostruire l’età di formazione e la cinematica dei diversi set di faglie e fratture.
ii) Nel secondo capitolo abbiamo caratterizzato i parametri delle fratture assieme al loro impatto sulla connettività idraulica e l’architettura della zona di danneggiamento legata alla faglia di Qala (Gozo). Per fare questo abbiamo applicato un nuovo workflow che combina scan-line lineari con scan-area applicate su modelli di affioramento digitali di dimensioni chilometri utilizzando inoltre metodi automatici per il calcolo dei parametri della fratturazione.
iii) Nel terzo capitolo, abbiamo mostrato come la meccanica stratigrafica e in particolare le proprietà elastiche delle rocce giochino un ruolo fondamentale nel controllo dello spessore della damage zone. I risultati sono stati ottenuti combinando osservazioni di terreno con analisi petro-fisiche, petrografiche, geo-meccaniche e modelli numerici.
iv) Nel quarto capitolo abbiamo utilizzato il Volume Elementare Rappresentativo del network di fratture caratterizzato durante lo studio effettuato nel capitolo due per realizzare modelli DFN ad una scala più piccola rispetto a quella del reservoir. Questo ci ha permesso di risolvere diversi problemi legati alla modellazione della fratturazione alla scala del reservoir.Fracture networks exert a primary role in the control of permeability and flow of geo-fluids (e.g hydrocarbons, ground water, hydrothermals fluid, etc.). Fracture parameters in the subsurface are usually characterised using borehole and seismic data, but these are affected by a scale gap. Well data are only sparse and partial and even the best seismic data cannot detect fractures shorter than ca 200 m. Km-scale outcrop analogues can help to fill this gap, allowing to collect huge amounts of of data at different scales. This PhD thesis investigates the fracture networks in carbonates of the Maltese Islands, located in the Pelagian Platform in the foreland of the Sicilian-Appenine-Maghrebian fold and thrust belt, that are world-class analogues of extensional fractured and faulted hydrocarbon reservoirs. Here a Late-Oligocene – Late Miocene carbonatic sequence composed by different types of carbonates is exposed. It is cross-cut by normal faults with a vertical displacement up to 210 meters, arranged in two main sets striking ENE-WSW and WNW-ESE. Moreover, Neptunian dykes associated with small normal faults (less than 5 meters of displacement) are present in the lower units. We applied a multidisciplinary approach that allowed us to carry out the following studies that are presented in the four chapters of these thesis. i) In the first chapter, we characterize the tectonic and geodynamic evolution of the Maltese Islands and Pelagian Platform from the Late Oligocene to the Pliocene and to understand the timing, kinematics and stress regime of the different fault and joint sets. ii) In the second chapter, we Investigate the fracture parameters and their impact on hydraulic connectivity and the architecture of the damage of the Qala fault (Gozo). The study was performed applying a new workflow that combines linear scanlines and scanareas collected on a large Digital Outcrop Model also using automatic methods for the extraction of fracture parameters. iii) In the third chapter, we investigate the control of the mechanical stratigraphy and in particular of the elastic properties of the rocks on the damage zone thickness combining petrographical, petrophysical, geomechanical and numerical modeling analyses. iv) In the fourth chapter, we characterize the Representative Elementary Volume of fracture network parameters extracted from the DOM study to drive Discrete Fracture Network modeling. This allows building DFN models on in order to build DFN model on a smaller scale with respect to the reservoir scale solving many numerical models.
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Lin, Tina L. (Tina Li-Te). "Analysis of geologic parameters on recirculating well technology, using 3-D numerical modeling : Massachusetts Military Reservation, Cape Cod." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/45485.
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Schepers, Karine Chrystel. "Quantification of uncertainty in reservoir simulations influenced by varying input geological parameters, Maria Reservoir, CaHu Field." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/1302.
Full textAbstract:
Finding and developing oil and gas resources requires accurate geological information with which to formulate strategies for exploration and exploitation ventures. When data are scarce, statistical procedures are sometimes substituted to compensate for the lack of information about reservoir properties. The most modern methods incorporate geostatistics. Even the best geostatistical methods yield results with varying degrees of uncertainty in their solutions. Geological information is, by its nature, spatially limited and the geoscientist is handicapped in determining appropriate values for various geological parameters that affect the final reservoir model (Massonnat, 1999). This study focuses on reservoir models that depend on geostatistical methods. This is accomplished by quantifying the uncertainty in outcome of reservoir simulations as six different geological variables are changed during a succession of reservoir simulations. In this study, variations in total fluid produced are examined by numerical modeling. Causes of uncertainty in outcomes of the model runs are examined by changing one of six geological parameters for each run. The six geological parameters tested for their impact on reservoir performances include the following: 1) variogram range used to krig thickness layers, 2) morphology around well 14, 3) shelf edge orientation, 4) bathymetry ranges attributed for each facies, 5) variogram range used to simulate facies distribution, 6) extension of the erosion at top of the reservoir. The parameters were assigned values that varied from a minimum to a maximum quantity, determined from petrophysical and core analysis. After simulation runs had been completed, a realistic, 3-dimensional reservoir model was developed that revealed a range of reservoir production data. The parameters that had the most impact on reservoir performance were: 1) the amount of rock eroded at the top of the reservoir zone and 2) the bathymetry assigned to the reservoir facies. This study demonstrates how interaction between geological parameters influence reservoir fluid production, how variations in those parameters influence uncertainties in reservoir simulations, and it highlights the interdependencies between geological variables. The analysis of variance method used to quantify uncertainty in this study was found to be rapid, accurate, and highly satisfactory for this type of study. It is recommended for future applications in the petroleum industry.
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Leven, Carsten. "Effects of Heterogeneous Parameter Distributions on Hydraulic Tests Analysis and Assessment /." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10405689.
Full textBooks on the topic "Parametri geologici"
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Cary, Lawrence E. Techniques for estimating selected parameters of the U.S. Geological Survey's Precipitation-Runoff Modeling System in eastern Montana and northeastern Wyoming. Helena, Mont: U.S. Dept. of the Interior, U.S. Geological Survey, 1991.
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Catherine, Hill Mary, United States. Dept. of Energy, and Geological Survey (U.S.), eds. Modflow-2000, the U.S. Geological Survey modular ground-water model: User guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
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Catherine, Hill Mary, United States. Dept. of Energy., and Geological Survey (U.S.), eds. Modflow-2000, the U.S. Geological Survey modular ground-water model: User guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
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C, Hill Mary, United States. Dept. of Energy., and Geological Survey (U.S.), eds. MODFLOW-2000: The U.S. Geological Survey modular ground-water model--user guide to the observation, sensitivity, and parameter-estimation processes, and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
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Catherine, Hill Mary, United States. Dept. of Energy, and Geological Survey (U.S.), eds. Modflow-2000, the U.S. Geological Survey modular ground-water model: User guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
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Catherine, Hill Mary, United States. Dept. of Energy, and Geological Survey (U.S.), eds. Modflow-2000, the U.S. Geological Survey modular ground-water model: User guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
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Geological Survey (U.S.), ed. Estimation of Hydraulic Parameters from an Unconfined Aquifer Test Conducted in a Glacial Outwash Deposit, Cape Cod, Massachusetts, U.S. Geological Survey, Professional Paper 1629, 2001. [S.l: s.n., 2001.
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Catherine, Hill Mary, United States. Dept. of Energy, and Geological Survey (U.S.), eds. Modflow-2000, the U.S. Geological Survey modular ground-water model: User guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
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Catherine, Hill Mary, United States. Dept. of Energy., and Geological Survey (U.S.), eds. Modflow-2000, the U.S. Geological Survey modular ground-water model: User guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
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Catherine, Hill Mary, United States. Dept. of Energy, and Geological Survey (U.S.), eds. Modflow-2000, the U.S. Geological Survey modular ground-water model: User guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.
Find full textBook chapters on the topic "Parametri geologici"
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Gorokhovski, Vikenti. "Transformation of Geological Objects’ Properties into Effective Model Parameters." In Effective Parameters of Hydrogeological Models, 65–71. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03569-7_5.
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Kern, H. "Geophysical and Geological Parameters Being Important for Modeling." In Joint Interpretation of Geophysical and Geological Data Applied to Lithospheric Studies, 57–69. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3590-0_4.
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Schuenemeyer, John H., and Ricardo A. Olea. "Distributional Assumptions and Parametric Uncertainties in the Aggregation of Geologic Resources." In Lecture Notes in Earth System Sciences, 49–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-32408-6_12.
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Gorokhovski, Vikenti. "Transformation of Geological Objects’ Properties into Effective Model Parameters." In SpringerBriefs in Earth Sciences, 65–71. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23722-5_5.
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Wendebourg, Johannes, Nathalie Bordas-Le Floch, and Francine Bénard. "How Predictive is a Geologic Model? The Role of Parameter Sensitivity and Data Fitting with an Example from Cusiana Field, Colombia." In Geologic Modeling and Simulation, 133–51. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1359-9_8.
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Bárdossy, A., H. Giese, and J. Grimm-Strele. "Interpolation of Groundwater Quality Parameters Using Geological and Land Use Classification." In geoENV II — Geostatistics for Environmental Applications, 247–58. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9297-0_21.
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Caumon, Guillaume. "Geological Objects and Physical Parameter Fields in the Subsurface: A Review." In Handbook of Mathematical Geosciences, 567–88. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78999-6_28.
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Thiery, Dominique. "Calibration of Groundwater Models by Optimization of Parameters in Homogeneous Geological Zones." In Stochastic and Statistical Methods in Hydrology and Environmental Engineering, 69–82. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1072-3_6.
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Marsland, A. "The Influence of Geological Processes and Test Procedures on Measured and Evaluated Parameters." In Offshore Site Investigation, 231–52. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-011-7358-2_15.
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Motanated, Kannipa, Nalin Eardkeaw, and Premanan Photee. "Principal Component Analysis of Geological and Tunnel Boring Machine Parameters in Hard Rock (Thailand)." In Research Developments in Geotechnics, Geo-Informatics and Remote Sensing, 201–3. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-72896-0_44.
Full textConference papers on the topic "Parametri geologici"
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Jacquemyn, C., Y. Melnikova, M. D. Jackson, G. J. Hampson, and C. M. John. "Geologic Modelling Using Parametric NURBS Surfaces." In ECMOR XV - 15th European Conference on the Mathematics of Oil Recovery. Netherlands: EAGE Publications BV, 2016. http://dx.doi.org/10.3997/2214-4609.201601884.
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Lee, S. Y., S. J. Hensel, and C. De Bock. "Thermal Analysis of Geologic High-Level Radioactive Waste Packages." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25105.
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The engineering design of disposal of the high level waste (HLW) packages in a geologic repository requires a thermal analysis to provide the temperature history of the packages. Calculated temperatures are used to demonstrate compliance with criteria for waste acceptance into the geologic disposal gallery system and as input to assess the transient thermal characteristics of the vitrified HLW Package. The objective of the work was to evaluate the thermal performance of the supercontainer containing the vitrified HLW in a non-backfilled and unventilated underground disposal gallery. In order to achieve the objective, transient computational models for a geologic vitrified HLW package were developed by using a computational fluid dynamics method, and calculations for the HLW disposal gallery of the current Belgian geological repository reference design were performed. An initial two-dimensional model was used to conduct some parametric sensitivity studies to better understand the geologic system’s thermal response. The effect of heat decay, number of co-disposed supercontainers, domain size, humidity, thermal conductivity and thermal emissivity were studied. Later, a more accurate three-dimensional model was developed by considering the conduction-convection cooling mechanism coupled with radiation, and the effect of the number of supercontainers (3, 4 and 8) was studied in more detail, as well as a bounding case with zero heat flux at both ends. The modeling methodology and results of the sensitivity studies will be presented.
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Zhou, Peng, Ligang Lu, Huiyan Sang, and Birol Dindoruk. "Application of Machine Learning Methods to Well Completion Optimization: Problems with Groups of Interactive Inputs." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206174-ms.
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Abstract In unconventional reservoirs, optimal completion controls are essential to improving well productivity and reducing costs. In this article, we propose a statistical model to investigate associations between shale oil production and completion parameters (e.g., completion lateral length, total proppant, number of hydraulic fracturing stages), while accounting for the influence of spatially heterogeneous geological conditions on hydrocarbon production. We develop a non-parametric regression method that combines a generalized additive model with a fused LASSO regularization for geological homogeneity pursuit. We present an alternating augmented Lagrangian method for model parameter estimations. The novelty and advantages of our method over the published ones are a) it can control or remove the heterogeneous non-completion effects; 2) it can account for and analyze the interactions among the completion parameters. We apply our method to the analysis of a real case from a Permian Basin US onshore field and show how our model can account for the interaction between the completion parameters. Our results provide key findings on how completion parameters affect oil production in that can lead to optimal well completion designs.
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Fonin, A. A., S. G. Suchkov, S. I. Mikheev, V. A. Nikolaevtsev, and D. S. Suchkov. "NEW METHOD OF GEOLOGICAL PROFILE ACOUSTIC PARAMETERS DETERMINATION." In The XVII-th Brekhovskikh’s Conference «Ocean Acoustics». Shirshov Institute Publishing House, 2020. http://dx.doi.org/10.29006/978-5-9901449-5-8-46.
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Chautru, J. M., R. Meunier*, H. Binet, and M. Bourges. "Geobodies Stochastic Analysis for Geological Model Parameter Inference." In Petroleum Geostatistics 2015. Netherlands: EAGE Publications BV, 2015. http://dx.doi.org/10.3997/2214-4609.201413643.
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Holtz, M. H. "Estimating Oil Reserve Variability by Combining Geologic and Engineering Parameters." In SPE Hydrocarbon Economics and Evaluation Symposium. Society of Petroleum Engineers, 1993. http://dx.doi.org/10.2118/25827-ms.
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Riaz, Amir, Yildiray Cinar, and Hamdi Tchelepi. "Modeling Unstable Flow Dynamics in Porous Media Associated With CO2 Sequestration." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66986.
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Multiphase flow in porous media is fundamentally a microscopic process that governs the behavior of geologic scale processes. The application of existing (standard) macroscopic models to problems of geologic scale multiphase flow has proved to be unsatisfactory within a wide range of governing parameters. Our objective is to develop the missing link between the fundamental physics of multiphase flow at the pore-scale and the phenomenological representation of dynamic behaviors across a hierarchy of geologic scales. An essential prerequisite to such an analysis is a qualitative understanding of the flow behavior in terms of flow structures that exist for various parameter combination within the regime of CO2 sequestration. An experimental study addressing these objectives is presented. Experiments are carried out at the laboratory scale in a vertical glass-bead pack, in the parameter range of sequestration flows. Experimental results are interpreted with the help of invasion percolation models.
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Herawati, Ida, Sonny Winardhie, Wahyu Triyoso, and Awali Priyono. "Estimation of Seismic Anisotropic Parameter using Velocity Dependent Offset Analysis." In Annual International Conference on Geological & Earth Sciences. Global Science & Technology Forum (GSTF), 2014. http://dx.doi.org/10.5176/2251-3353_geos14.19.
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Romanov, A. M. "COMPARISON OF THERMODYNAMIC AND ELECTRICAL PARAMETERS OF IONIC COMPOUNDS." In The Geological Evolution of the Water-Rock Interaction. Buryat Scientific Center of SB RAS Press, 2018. http://dx.doi.org/10.31554/978-5-7925-0536-0-2018-219-222.
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Mo, Sjur, Peter Zweigel, Erik G. B. Lindeberg, and Idar Akervoll. "Effect of Geologic Parameters on CO2 Storage in Deep Saline Aquifers." In SPE Europec/EAGE Annual Conference. Society of Petroleum Engineers, 2005. http://dx.doi.org/10.2118/93952-ms.
Full textReports on the topic "Parametri geologici"
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Porter, D. W. Data Fusion: A decision analysis tool that quantifies geological and parametric uncertainty. Office of Scientific and Technical Information (OSTI), April 1996. http://dx.doi.org/10.2172/329484.
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Gosselin, P., and B. Dubé. Gold deposits of Canada: distribution, geological parameters and gold content. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2005. http://dx.doi.org/10.4095/220380.
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Gosselin, P., and B. Dubé. Gold deposits of the world: distribution, geological parameters and gold content. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2005. http://dx.doi.org/10.4095/220379.
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Ehgartner, Brian L., and Byoung Yoon Park. Sensitivity of storage field performance to geologic and cavern design parameters in salt domes. Office of Scientific and Technical Information (OSTI), March 2009. http://dx.doi.org/10.2172/959108.
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Henderson, Tim, Mincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Chihuahuan Desert Inventory & Monitoring Network. National Park Service, April 2021. http://dx.doi.org/10.36967/nrr-2285306.
Full textAbstract:
A fundamental responsibility of the National Park Service is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources and the factors or activities which may threaten or influence their stability. There are several different categories of geologic or stratigraphic units (supergroup, group, formation, member, bed) which represent a hierarchical system of classification. The mapping of stratigraphic units involves the evaluation of lithologies, bedding properties, thickness, geographic distribution, and other factors. If a new mappable geologic unit is identified, it may be described and named through a rigorously defined process that is standardized and codified by the professional geologic community (North American Commission on Stratigraphic Nomenclature 2005). In most instances when a new geologic unit such as a formation is described and named in the scientific literature, a specific and well-exposed section of the unit is designated as the type section or type locality (see Definitions). The type section is an important reference section for a named geologic unit which presents a relatively complete and representative profile for this unit. The type or reference section is important both historically and scientifically, and should be recorded such that other researchers may evaluate it in the future. Therefore, this inventory of geologic type sections in NPS areas is an important effort in documenting these locations in order that NPS staff recognize and protect these areas for future studies. The documentation of all geologic type sections throughout the 423 units of the NPS is an ambitious undertaking. The strategy for this project is to select a subset of parks to begin research for the occurrence of geologic type sections within particular parks. The focus adopted for completing the baseline inventories throughout the NPS was centered on the 32 inventory and monitoring networks (I&M) established during the late 1990s. The I&M networks are clusters of parks within a defined geographic area based on the ecoregions of North America (Fenneman 1946; Bailey 1976; Omernik 1987). These networks share similar physical resources (geology, hydrology, climate), biological resources (flora, fauna), and ecological characteristics. Specialists familiar with the resources and ecological parameters of the network, and associated parks, work with park staff to support network level activities (inventory, monitoring, research, data management). Adopting a network-based approach to inventories worked well when the NPS undertook paleontological resource inventories for the 32 I&M networks. The network approach is also being applied to the inventory for the geologic type sections in the NPS. The planning team from the NPS Geologic Resources Division who proposed and designed this inventory selected the Greater Yellowstone Inventory and Monitoring Network (GRYN) as the pilot network for initiating this project. Through the research undertaken to identify the geologic type sections within the parks of the GRYN, methodologies for data mining and reporting on these resources was established. Methodologies and reporting adopted for the GRYN have been used in the development of this type section inventory for the Chihuahuan Desert Inventory & Monitoring Network. The goal of this project is to consolidate information pertaining to geologic type sections which occur within NPS-administered areas, in order that this information is available throughout the NPS...
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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Northern Colorado Plateau Inventory & Monitoring Network. National Park Service, April 2021. http://dx.doi.org/10.36967/nrr-2285337.
Full textAbstract:
A fundamental responsibility of the National Park Service (NPS) is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources and the factors or activities which may threaten or influence their stability. There are several different categories of geologic or stratigraphic units (supergroup, group, formation, member, bed) which represent a hierarchical system of classification. The mapping of stratigraphic units involves the evaluation of lithologies, bedding properties, thickness, geographic distribution, and other factors. If a new mappable geologic unit is identified, it may be described and named through a rigorously defined process that is standardized and codified by the professional geologic community (North American Commission on Stratigraphic Nomenclature 2005). In most instances when a new geologic unit such as a formation is described and named in the scientific literature, a specific and well-exposed section of the unit is designated as the type section or type locality (see Definitions). The type section is an important reference section for a named geologic unit which presents a relatively complete and representative profile. The type or reference section is important both historically and scientifically, and should be available for other researchers to evaluate in the future. Therefore, this inventory of geologic type sections in NPS areas is an important effort in documenting these locations in order that NPS staff recognize and protect these areas for future studies. The documentation of all geologic type sections throughout the 423 units of the NPS is an ambitious undertaking. The strategy for this project is to select a subset of parks to begin research for the occurrence of geologic type sections within particular parks. The focus adopted for completing the baseline inventories throughout the NPS was centered on the 32 inventory and monitoring networks (I&M) established during the late 1990s. The I&M networks are clusters of parks within a defined geographic area based on the ecoregions of North America (Fenneman 1946; Bailey 1976; Omernik 1987). These networks share similar physical resources (geology, hydrology, climate), biological resources (flora, fauna), and ecological characteristics. Specialists familiar with the resources and ecological parameters of the network, and associated parks, work with park staff to support network level activities (inventory, monitoring, research, data management). Adopting a network-based approach to inventories worked well when the NPS undertook paleontological resource inventories for the 32 I&M networks. The network approach is also being applied to the inventory for the geologic type sections in the NPS. The planning team from the NPS Geologic Resources Division who proposed and designed this inventory selected the Greater Yellowstone Inventory and Monitoring Network (GRYN) as the pilot network for initiating this project. Through the research undertaken to identify the geologic type sections within the parks of the GRYN methodologies for data mining and reporting on these resources was established. Methodologies and reporting adopted for the GRYN have been used in the development of this type section inventory for the Northern Colorado Plateau Inventory & Monitoring Network. The goal of this project is to consolidate information pertaining to geologic type sections which occur within NPS-administered areas, in order that this information is available throughout the NPS...
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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Klamath Inventory & Monitoring Network. National Park Service, July 2021. http://dx.doi.org/10.36967/nrr-2286915.
Full textAbstract:
A fundamental responsibility of the National Park Service (NPS) is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources and the factors or activities which may threaten or influence their stability. There are several different categories of geologic or stratigraphic units (supergroup, group, formation, member, bed) which represent a hierarchical system of classification. The mapping of stratigraphic units involves the evaluation of lithologies, bedding properties, thickness, geographic distribution, and other factors. If a new mappable geologic unit is identified, it may be described and named through a rigorously defined process that is standardized and codified by the professional geologic community (North American Commission on Stratigraphic Nomenclature 2005). In most instances when a new geologic unit such as a formation is described and named in the scientific literature, a specific and well-exposed section of the unit is designated as the type section or type locality (see Definitions). The type section is an important reference section for a named geologic unit which presents a relatively complete and representative profile. The type or reference section is important both historically and scientifically, and should be protected and conserved for researchers to study and evaluate in the future. Therefore, this inventory of geologic type sections in NPS areas is an important effort in documenting these locations in order that NPS staff recognize and protect these areas for future studies. The documentation of all geologic type sections throughout the 423 units of the NPS is an ambitious undertaking. The strategy for this project is to select a subset of parks to begin research for the occurrence of geologic type sections within particular parks. The focus adopted for completing the baseline inventories throughout the NPS was centered on the 32 inventory and monitoring networks (I&M) established during the late 1990s. The I&M networks are clusters of parks within a defined geographic area based on the ecoregions of North America (Fenneman 1946; Bailey 1976; Omernik 1987). These networks share similar physical resources (geology, hydrology, climate), biological resources (flora, fauna), and ecological characteristics. Specialists familiar with the resources and ecological parameters of the network, and associated parks, work with park staff to support network level activities (inventory, monitoring, research, data management). Adopting a network-based approach to inventories worked well when the NPS undertook paleontological resource inventories for the 32 I&M networks. The network approach is also being applied to the inventory for the geologic type sections in the NPS. The planning team from the NPS Geologic Resources Division who proposed and designed this inventory selected the Greater Yellowstone Inventory and Monitoring Network (GRYN) as the pilot network for initiating this project. Through the research undertaken to identify the geologic type sections within the parks of the GRYN methodologies for data mining and reporting on these resources were established. Methodologies and reporting adopted for the GRYN have been used in the development of this type section inventory for the Klamath Inventory & Monitoring Network. The goal of this project is to consolidate information pertaining to geologic type sections which occur within NPS-administered areas, in order that this information is available throughout the NPS to inform park managers...
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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Mojave Desert Inventory & Monitoring Network. National Park Service, December 2021. http://dx.doi.org/10.36967/nrr-2289952.
Full textAbstract:
A fundamental responsibility of the National Park Service (NPS) is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources and the factors or activities that may threaten or influence their stability and preservation. There are several different categories of geologic or stratigraphic units (supergroup, group, formation, member, bed) that represent a hierarchical system of classification. The mapping of stratigraphic units involves the evaluation of lithologies, bedding properties, thickness, geographic distribution, and other factors. Mappable geologic units may be described and named through a rigorously defined process that is standardized and codified by the professional geologic community (North American Commission on Stratigraphic Nomenclature 2005). In most instances when a new geologic unit such as a formation is described and named in the scientific literature, a specific and well-exposed section or exposure area of the unit is designated as the type section or other category of stratotype (see “Definitions” below). The type section is an important reference exposure for a named geologic unit which presents a relatively complete and representative example for this unit. Geologic stratotypes are important both historically and scientifically, and should be available for other researchers to evaluate in the future.. The inventory of all geologic stratotypes throughout the 423 units of the NPS is an important effort in documenting these locations in order that NPS staff recognize and protect these areas for future studies. The focus adopted for completing the baseline inventories throughout the NPS was centered on the 32 inventory and monitoring networks (I&M) established during the late 1990s. The I&M networks are clusters of parks within a defined geographic area based on the ecoregions of North America (Fenneman 1946; Bailey 1976; Omernik 1987). These networks share similar physical resources (e.g., geology, hydrology, climate), biological resources (e.g., flora, fauna), and ecological characteristics. Specialists familiar with the resources and ecological parameters of the network, and associated parks, work with park staff to support network-level activities such as inventory, monitoring, research, and data management. Adopting a network-based approach to inventories worked well when the NPS undertook paleontological resource inventories for the 32 I&M networks. The planning team from the NPS Geologic Resources Division who proposed and designed this inventory selected the Greater Yellowstone Inventory & Monitoring Network (GRYN) as the pilot network for initiating this project. Through the research undertaken to identify the geologic stratotypes within the parks of the GRYN methodologies for data mining and reporting on these resources were established. Methodologies and reporting adopted for the GRYN have been used in the development of this report for the Mojave Desert Inventory & Monitoring Network (MOJN). The goal of this project is to consolidate information pertaining to geologic type sections that occur within NPS-administered areas, in order that this information is available throughout the NPS to inform park managers and to promote the preservation and protection of these important geologic landmarks and geologic heritage resources. The review of stratotype occurrences for the MOJN shows there are currently no designated stratotypes for Joshua Tree National Park (JOTR) or Manzanar National Historic Site (MANZ); Death Valley...
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Henderson, Tim, Vincet Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: North Coast and Cascades Inventory & Monitoring Network. National Park Service, March 2022. http://dx.doi.org/10.36967/nrr-2293013.
Full textAbstract:
A fundamental responsibility of the National Park Service (NPS) is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources and the factors or activities which may threaten or influence their stability and preservation. There are several different categories of geologic or stratigraphic units (supergroup, group, formation, member, bed) that form a hierarchical system of classification. The mapping of stratigraphic units involves the evaluation of lithologies (rock types), bedding properties, thickness, geographic distribution, and other factors. Mappable geologic units may be described and named through a rigorously defined process that is standardized and codified by the professional geologic community (North American Commission on Stratigraphic Nomenclature 2021). In most instances, when a new geologic unit (such as a formation) is described and named in the scientific literature, a specific and well-exposed section or exposure area of the unit is designated as the stratotype (see “Definitions” below). The type section is an important reference exposure for a named geologic unit that presents a relatively complete and representative example for this unit. Geologic stratotypes are important both historically and scientifically, and should be available for other researchers to evaluate in the future. The inventory of all geologic stratotypes throughout the 423 units of the NPS is an important effort in documenting these locations in order that NPS staff recognize and protect these areas for future studies. The focus adopted for completing the baseline inventories throughout the NPS was centered on the 32 inventory and monitoring (I&M) networks established during the late 1990s. The I&M networks are clusters of parks within a defined geographic area based on the ecoregions of North America (Fenneman 1946; Bailey 1976; Omernik 1987). These networks share similar physical resources (geology, hydrology, climate), biological resources (flora, fauna), and ecological characteristics. Specialists familiar with the resources and ecological parameters of the network, and associated parks, work with park staff to support network-level activities (inventory, monitoring, research, and data management). Adopting a network-based approach to inventories worked well when the NPS undertook paleontological resource inventories for the 32 I&M networks. The planning team from the NPS Geologic Resources Division who proposed and designed this inventory selected the Greater Yellowstone Inventory and Monitoring Network (GRYN) as the pilot network for initiating this project. Through the research undertaken to identify the geologic stratotypes within the parks of the GRYN methodologies for data mining and reporting on these resources were established. Methodologies and reporting adopted for the GRYN have been used in the development of this report for the North Coast and Cascades Inventory & Monitoring Network (NCCN). The goal of this project is to consolidate information pertaining to geologic type sections that occur within NPS-administered areas, in order that this information is available throughout the NPS to inform park managers and to promote the preservation and protection of these important geologic landmarks and geologic heritage resources. The review of stratotype occurrences for the NCCN shows there are currently no designated stratotypes for Fort Vancouver National Historic Site (FOVA), Lewis and Clark National Historical Park (LEWI), or San Juan...
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Henderson, Tim, Vincent Santucci, Tim Connors, and Justin Tweet. National Park Service geologic type section inventory: Central Alaska Inventory & Monitoring Network. National Park Service, May 2022. http://dx.doi.org/10.36967/nrr-2293381.
Full textAbstract:
A fundamental responsibility of the National Park Service (NPS) is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources and the factors or activities which may threaten or influence their stability and preservation. There are several different categories of geologic or stratigraphic units (supergroup, group, formation, member, bed) that form a hierarchical system of classification. The mapping of stratigraphic units involves the evaluation of lithologies (rock types), bedding properties, thickness, geographic distribution, and other factors. Mappable geologic units may be described and named through a rigorously defined process that is standardized and codified by the professional geologic community (North American Commission on Stratigraphic Nomenclature 2021). In most instances when a new geologic unit such as a formation is described and named in the scientific literature, a specific and well-exposed section or exposure area of the unit is designated as the stratotype (see “Definitions” below). The type section is an important reference exposure for a named geologic unit that presents a relatively complete and representative example for this unit. Geologic stratotypes are important both historically and scientifically, and should be available for other researchers to evaluate in the future. The inventory of all geologic stratotypes throughout the 423 units of the NPS is an important effort in documenting these locations in order that NPS staff recognize and protect these areas for future studies. The focus adopted for completing the baseline inventories throughout the NPS is centered on the 32 inventory and monitoring networks (I&M) established during the late 1990s. The I&M networks are clusters of parks within a defined geographic area based on the ecoregions of North America (Fenneman 1946; Bailey 1976; Omernik 1987). These networks share similar physical resources (geology, hydrology, climate), biological resources (flora, fauna), and ecological characteristics. Specialists familiar with the resources and ecological parameters of the network, and associated parks, work with park staff to support network level activities (inventory, monitoring, research, data management). Adopting a network-based approach to inventories worked well when the NPS undertook paleontological resource inventories for the 32 I&M networks. The planning team from the NPS Geologic Resources Division who proposed and designed this inventory selected the Greater Yellowstone Inventory and Monitoring Network (GRYN) as the pilot network for initiating this project (Henderson et al. 2020). Through the research undertaken to identify the geologic stratotypes within the parks of the GRYN methodologies for data mining and reporting on these resources were established. Methodologies and reporting adopted for the GRYN have been used in the development of this report for the Arctic Inventory & Monitoring Network (ARCN). The goal of this project is to consolidate information pertaining to geologic type sections that occur within NPS-administered areas, in order that this information is available throughout the NPS to inform park managers and to promote the preservation and protection of these important geologic landmarks and geologic heritage resources. The review of stratotype occurrences for the ARCN shows there are currently no designated stratotypes for Cape Krusenstern National Monument (CAKR) and Kobuk Valley National Park (KOVA)...