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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.
Повний текст джерелаScopo 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.
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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.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains xii, 84 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 83).
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.
Повний текст джерелаSECCI, 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.
Повний текст джерелаBarahona-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.
Повний текст джерелаLa 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.
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.
Знайти повний текст джерелаMARTINELLI, 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.
Повний текст джерелаFracture 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.
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.
Повний текст джерелаSchepers, 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.
Повний текст джерелаLeven, 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.
Повний текст джерелаLevin, Sara. "Riktvärden för förorenad mark : En undersökning av hur riktvärden för förorenad mark har förändrats gentemot tidigare riktvärden samt hur de påverkas av variationer i geologiska och hydrogeologiska parametrar." Thesis, Mälardalen University, School of Sustainable Development of Society and Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-5529.
Повний текст джерелаRisk assessment is made to determine risks with contaminated areas and to determine which treatment the area requires. In Sweden, risk assessment is divided into three levels: risk analysis, facilitated risk assessment and detailed risk assessment. In detailed risk assessment site-specific guideline values are developed to compare with values of contaminants that are measured in the area.
Site-specific guideline values vary with geological and hydrogeological parameters. The purpose of this report is to examine which of these parameters that affect the guideline values. The examination was done using a calculating program for consideration from the Swedish Environmental Protection Agency from the year of 1997. The study shows that some of the geological and hydrogeological parameters affect the site-specific guideline values for metals in different ways and others do not.
Using the program from the Swedish Environmental Protection Agency is a simple way to calculate site-specific guideline values. It’s important to make sure that relevant values are chosen to get correct results. The calculating program is still not definitive so it’s important to be careful when using it.
Another purpose of the report is to compare how guideline values have developed from the Swedish Environmental Protection Agency’s model for calculating guideline values from the year of 1997 with their new report whit the same purpose from the year of 2007. Guideline values for all metals that have been considered are lower in the new model from the year of 2007 compared to the model from the year of 1997.
Leven, Carsten [Verfasser]. "Effects of heterogeneous parameter distributions on hydraulic tests : analysis and assessment / Zentrum für Angewandte Geowissenschaften, Angewandte Geologie. Carsten Leven." Tübingen : Inst. und Museum für Geologie und Paläontologie, 2003. http://d-nb.info/968571808/34.
Повний текст джерелаPIERUCCIONI, DIEGO. "Analysis of geological parameters for optimization of geothermal probes applied to heat pumps: individuation of a technical and procedural iter." Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266761.
Повний текст джерелаPittarello, Lidia. "Study of exhumed paleo-seismic fault as a gauge to estimate earthquake source parameters." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3425677.
Повний текст джерелаFaglie esumate sigillate da pseuotachiliti, fusi di frizione solidificati che registrano una rottura sismica (Sibson, 1975), possono fornire informazioni sulla sorgente del terremoto. Sono stati studiati due casi rappresentativi di ambienti simogenetici differenti: l’associazione pseudotachiliti-miloniti nella corsta inferiore, nei metagabbri della Zona d’Ivrea e le pseudotachiliti della “crosta superiore” nel batolite granitoide terziario dell’Adamello. Nei metagabbri è stata documentata la produzione ciclica e contemporanea di fusi di frizione e ultramiloniti localizzate di alta temperatura, entrambe prodotte in facies anfibolitica. Studiando una pseudotachilite prescelta dal batolite dell’Adamello, si è stimato il bilancio energetico di un terremoto, concludendo che la maggior parte dell’energia si è dissipata sotto forma di calore di frizione. Infine si è modellizzata l’evoluzione termica di un fuso di frizione, dimostrando che l’originaria struttura cataclastica usata per stimare il contributo dell’energia di superficie può potenzialmente essersi localmente preservata.
Kraatz, Lindsey M. "Acoustic and sedimentological investigations of seabed conditions and related bio-geological parameters in a tidally energetic, fine-grained environment: York River Estuary, Virginia." W&M ScholarWorks, 2013. https://scholarworks.wm.edu/etd/1539616722.
Повний текст джерелаFox, Don. "Prediction of acid rock drainage (ARD) from sulphidic slates using GIS analysis of mineralogical, geochemical, magnetic and geological parameters, a test case in southern Nova Scotia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0019/NQ49258.pdf.
Повний текст джерелаVidal, Ruth Maria Bonfim. "Caracterização hidrológica e geoquímica das áreas adjacentes aos bancos oceânicos do nordeste brasileiro." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/7770.
Повний текст джерелаThe object of this work is to supply hidrologicals datas with ends of monitoramento of the area of the North Chain of Brazil and of the Chain of Fernando of Noronha, as well as to lift and to systematize information on the geochesmitry of the several types of sediments found in the external continental platform adjacent to the bank Aracati, contributing to the rising of the maintainable potentials of exploration of the alive resources of the Exclusive Economic Zone. The area in study understands the subarea II, section 1 and it leaves of the section 2, and it is located among 1oN and 5oS of latitude and among 30o and 40oW of longitude, embracing an area of approximately 400.000 km2. Samples collected in 8 stations resulting in 20 samples of sediments in the years of 1997 were analyzed (summer), 1998 (autumn) and 2000 (spring) and 34 stations that originated 272 samples of water in the spring of 2000. The maximum concentrations of the analyzed parameters, except for the phosphate, in the samples of water are located in the close area to the coast. It was detected in the area a very marked termocline, being deeper in the spring. The mixture layer is quite homogeneous, being even so, more it thickens in the spring. The detected pH meets in the alkaline strip being the largest pH values detected in the spring. It is verified, a maximum of salinity in the layer of I begin of the seasonal termoclina. It was not verified in the area anaerobic condition in the column of water. The distribution of phosphate, nitrate and silicate, come in a very similar way, and in the spring those concentrations are larger, in the superficial layers. In the sedimentary covering of the continental platform adjacent to the banks of the north chain of Brazil, find quartz sands, it sands carbonate, shell fragments, Lithothanmium and Halimedas. The shell fragments presented the largest total concentrations of metals, while Lithothanmium presented the largest text of carbonate. There is a strong correlation between iron and manganese in to samples of water and in all the analyzed fractions of sediments, and in these the medium relationship among these elements is of the order of 1:25. strong correlation Exists between chromium and carbonate in the samples that present text of larger carbonate than 20%. The samples of quartz sand, shell fragments and Halimedas, come very similar with relationship to the distribution of iron, manganese, zinc and chromium. Strong correlation exists in the sediment samples, as well as in the samples of water, among iron, manganese, zinc, being also correlated in the sediment samples with the lead. The concentrations 10 of metals in the samples of water came relatively low in if comparing with the sediment samples. In the samples of water the concentrations of chromium and lead are below the detection limit.
Bauer, Johanna Frederike [Verfasser], Jonas [Akademischer Betreuer] Kley, Jonas [Gutachter] Kley, David C. [Gutachter] Tanner, and Inga [Gutachter] Moeck. "On the significance and predictability of geological parameters in the exploration for geothermal energy / Johanna Frederike Bauer ; Gutachter: Jonas Kley, David C. Tanner, Inga Moeck ; Betreuer: Jonas Kley." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/1157094716/34.
Повний текст джерелаOliveira, Julio Fernandes de. "Identificação de áreas de sedimentos compatíveis na Plataforma Continental interna para recuperação de praias entre as cidades de Niterói e Macaé– RJ." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/56334.
Повний текст джерелаThe urbanized coastline of east and south-east littoral of the state of Rio de Janeiro suffers constantly with the destruction of houses, walls and streets in extreme oceanographic events. These constructions, in most cases are located very close to the limit with the beach, inside of the range of no building suggest by Projeto Orla – Ministry of Environment. This region has strong population growth with major economic activities associated with oil exploration in the city of Macae and Rio das Ostras, industry of tourism in Lakes Region and the urban center of Niteroi already consolidated. The identification of sand deposits with similar granulometric characteristics to the native material to nourishment project as a mitigation option, represented an alternative to maintain the protective function of the beach and use for recreation. The objective of this study is analyze the compatibility of surface sediments of the inner continental shelf and sands of urban beaches, located between the cities of Niteroi and Macae – RJ, through of comparison the statistical parameters of size distribution of the sands of these two environments. For the characterization of sedimentary beaches were sampled from the beach face of 16 beaches located in the major urban centers of this segment of the coastline of Rio de Janeiro’s state. The granulometric data of surface sediments of the inner continental shelf between Niteroi an Macae are secondary from preterits oceanographic campaigns. These datas were filtered and digitized with a total of approximately 1200 collection points ranging from east bar of Guanabara Bay to the Restinga de Jurubatiba. Eleven areas granulometrically compatible with the different beaches were identified near the -20 meters isobaths near the coast of Niteroi and Marica, Cabo Frio and Buzios and between Rio das Ostras and Macae, representing a potential borrow areas for use in nourishment projects in this region.
Lange, Vega Diego. "Lidar and S-band radar profiling of the atmosphere : adaptive processing for boundary-layer monitoring, optical-parameter error estimation, and application cases." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/279246.
Повний текст джерелаLa tesis doctoral aborda la teledetecció atmosfèrica amb tècniques lidar i radar (banda S) i llur tractament del senyal. La teledetecció activa amb aquests instruments ofereix resolucions espacials i temporals sense precedents en la perfilometria vertical de l'atmosfera i recuperació de productes de dades òptics i físics atmosfèrics en un marc de creixent regulació mediambiental. El primer objectiu d'aquesta tesi concerneix l'estimació de cotes d'error en la inversió del perfil del coeficient de retrodispersió atmosfèrica a partir de senyals lidar de tipus elàstic (és a dir, sense desplaçament de la longitud d'ona en recepció al interactuar amb els dispersors atmosfèrics) mitjançant l'algorisme d'inversió de dues components de Klett-Fernald-Sasano. Aquest objectiu parteix de treballs previs en el Remote Sensing Lab. (RSLab) de la Universitat Politècnica de Catalunya (UPC) i permet obtenir cotes de primer ordre (aproximades) basades en propagació d'errors i cotes (exactes) basades en el increment total de l'error. Característica diferencial en front l'estat de l'art és l'assimilació d'errors sistemàtics (per exemple, entrades de cal.libració d'usuari) i aleatoris (relació senyal-soroll, SNR, finita) en forma matemàtica explícita. El segon objectiu, central de la tesis, aborda l'estimació de l'altura de la capa límit atmosfèrica (ABLH) a partir de senyal lidar elàstics i d'observacions radar en banda S (ona continua amb modulació en freqüència, FMCW) utilitzant tècniques adaptatives basades en filtrat estès de Kalman (EKF). El filtre es basa en modelat morfològic de la transició atmosfèrica entre la capa de mescla i la troposfera lliure i en l'estimació continua de la informació de covariança del soroll. En el prototipus lidar-EKF la tècnica proposada millora clarament les tècniques clàssiques d'estimació de la ABLH como són les basades en mètodes derivatius, decisió de llindar, o el mètode de la variança-centroide. La formulació EKF s'aplica tant a mesures procedents de ceilòmetres lidar como de la pròpia estació lidar UPC en escenes d'alta i baixa SNR. Addicionalment, l'enfoc lidar-EKF es reformula i s'estén amb èxit a escenes radar en banda S (dispersió Bragg) en presència de fonts de soroll interferent (dispersió Rayleigh de, per exemple, insectes i ocells). En aquest context, la característica FMCW permet la capacitat de resolució en distància. L'estimació de la ABLH amb els prototipus lidar-EKF i radar-EKF s'intercompara en campanyes de mesura. Finalment, el tercer objectiu atén a l'explotació de l'estació lidar UPC existent: En una primera part introductòria, es formula un algorisme modificat de "gluing" per a la millora del marge dinàmic de canals lidar elàstics mitjançant combinació (o "enganxat") de senyals lidar adquirits analògicament i amb foto-comptatge. En una segona part, es presenten dos exemples (incloent l'aplicació de l'algorisme de "gluing") que il.lustren les capacitats del lidar de la UPC en l'observació atmosfèrica de dos recents erupcions volcàniques des de la xarxa d'observació EARLINET (European Aerosol Research Lidar Network). Aquesta última és part de GALION (Global Atmospheric Watch Atmospheric Lidar Observation Network)-GEOSS (Global Earth Observation System of Systems).
Ekberg, Bergman Emelie. "Jämförelse av metod vid stabilitetsanalys i bergslänter." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-352090.
Повний текст джерелаThe stability of a rock slope is controlled by the rock’s mechanical properties, such as rock quality and facets. To achieve the desired stability in a rock slope, the mechanical parameters need to be mapped and analysed to determine possible failures and decide necessary stability measures. The purpose of this study is to evaluate the quality of rock technical data from digital photogrammetry 3D models by comparing the result with manual measurements from conventional mapping. The goal is also to explore the potential uses of photogrammetric 3D models for rock slope stability analyses by evaluate the photogrammetric data. Facets extracted from 3D models were found to have the same quality as manual measurements. However, the UAS-based method cannot completely replace the conventional method but can be useful as a complementary tool. Photogrammetry enables the collection of data from a safer distance, which reduces workplace hazards that the conventional method entails. The digital method also proved to have more advantages, such as the possibility of digital mapping and analysing which is less costly and time-consuming, digital data storage and the possibility to access outcrops that can’t be mapped with manually measurements due to inaccessibility.
Beiki, Majid. "New Techniques for Estimation of Source Parameters : Applications to Airborne Gravity and Pseudo-Gravity Gradient Tensors." Doctoral thesis, Uppsala universitet, Geofysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-143015.
Повний текст джерелаFelaktigt tryckt som Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 730
SILVA, Andrezza Sousa. "Fatores controladores dos aspectos texturais em rochas siliciclásticas deformadas por bandas cataclásticas." Universidade Federal de Campina Grande, 2018. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1596.
Повний текст джерелаMade available in DSpace on 2018-08-29T23:45:59Z (GMT). No. of bitstreams: 1 ANDREZZA SOUSA SILVA – DISSERTAÇÃO (PPGEPM) 2018.pdf: 5233631 bytes, checksum: 12ad47a8373c6479a15d2cbfeba06e8d (MD5) Previous issue date: 2018-03-19
A Bacia Rio do Peixe (BRP) apresenta diversas estruturas rúpteis, dentre elas as bandas de deformação, que podem controlar as propriedades petrofísicas e aspectos texturais das rochas. Portanto, o objetivo deste trabalho é identificar os efeitos causados pelos diferentes tipos de bandas de deformação cataclásticas, em função da cinemática, sobre os aspectos texturais, distribuição de tamanho de grãos e poros, bem como porosidade em arenitos conglomeráticos. As propriedades dos grãos e dos poros foram extraídas através da análise de imagens em seções delgadas no Avizo Fire 8.1. No total foram analisadas 23 amostras, 19 com bandas de deformação (CB) com orientação definida (NW, NE, NS e EW), 2 amostras deformadas, porém sem bandas (SB) e 2 amostras da rocha hospedeira (ND). As rochas deformadas (CB e SB), apresentam redução no tamanho de grãos e pequeno acréscimo nos valores dos aspectos texturais em comparação a rocha não deformada (ND). Em relação à porosidade foi encontrada redução de 66% nas amostras CB e acréscimo de 13% nas SB. Ambos agrupamentos possuem maior conexão de grãos, permitindo o surgimento da macroporosidade, que não havia sido detectada nas amostras ND. Dentre as amostras com banda de deformação e cinemática definida, a rochas associadas ao sistema transcorrente dextral, de direção NW, possuem maior redução de diâmetro de grão, e menor redução de porosidade, cerca de 29%. As amostras com bandas de deformação NE e NS, formadas por cinemática transtensiva, são as amostras nas quais houve a menor quebra dos grãos, entretanto caracterizam-se pela presença de porosidade por fraturamento de grãos, gerando altos picos de macroporosidade. As amostras oriundas do sistema distensivo de direção EW possuem segunda maior redução de grãos, maior redução de porosidade e ausência de macroporosidade. Os aspectos texturais (circularidade, convexidade e razão de aspecto) das amostras com banda (NW, NE, NS e EW) é dependente da intensidade de cisalhamento provocado por diferentes sistemas deformacionais, quanto mais intenso mais cominuído será o grão, e consequentemente mais convexo, circular e menos alongado. Logo, é possível observar que a cinemática e a presença de bandas de deformação exercem controle sobre os aspectos texturais e petrofísicos dos arenitos conglomeráticos da Formação Antenor Navarro. E esse controle é definido pela compactação da rocha, rearranjo dos grãos, intensidade da catáclase, presença de fraturamento de grãos e cinemática atuante.
The Rio do Peixe Basin (RPB) presents several rump structures, among them the deformation bands, which can control the petrophysical properties and textured aspects of the rocks. Therefore, the objective of this work is to identify the effects caused by the different types of cataclastic deformation bands, as a function of kinematics, on the textural aspects, grain and pore size distribution, as well as porosity in conglomeratic sandstones. The grain and pore properties were extracted by thin section image analysis in Avizo Fire 8.1. In total, 23 specimens were analyzed, 19 with deformation bands (CB) with defined orientation (NW, NE, NS and EW), 2 deformed samples, but without bands (SB) and 2 samples of host rock (ND). The deformed rocks (CB and SB), present a reduction in grain size and small increase in the values of the textured aspects in comparison to the non-deformed rock (ND). In relation to the porosity, a reduction of 66% was found in the CB samples and a 13% increase in the SB. Both clusters have a larger grain connection, allowing the appearance of macroporosity, which had not been detected in the ND samples. Among the samples with deformation band and defined kinematics, the rocks associated to the dextral transcurrent system, NW direction, have a larger reduction of grain diameter, and a smaller reduction of porosity, about 29%. The samples with NE and NS deformation bands, formed by transtensive kinematics, are the samples with the lowest grain breakage. However, they are characterized by the presence of porosity by grain fracturing, generating high peaks of macroporosity. The samples from the EW steering distance system have the second largest grain reduction, greater reduction of porosity and absence of macroporosity. The textural aspects (roundness, convexity and aspect ratio) of the banded samples (NW, NE, NS and EW) are dependent on the shear strength caused by different deformation systems, the more intense the grain is, the more convex, circular and less elongated. Therefore, it is possible to observe that kinematics and the presence of deformation bands exert control over the texture and petrophysical aspects of the conglomeratic sandstones of the Antenor Navarro Formation. And this control is defined by the rock compaction, rearrangement of the grains, the intensity of the catachase, presence of grain fracture and active kinematics.
Díaz, da Jornada Ana Carolina López. "Interpretação de perfis elétricos na caracterização dos reservatórios de Camisea, Peru." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/13709.
Повний текст джерелаThe Mesozoic sequence of the Ucayali basin is the main producer of gas and condensate of Peru. The work area is called Gran Camisea, located in the south part of the basin, and, in the present time, belongs to the company Plupetrol Peru Corporation. In this work, a well log interpretation method was used in a gas well in San Martin area, part of the Camisea field. The goal is the characterization of the reservoir of San Martín using a Quick Look log interpretation method, and thus to supply a general view in the understanding of well and reservoirs parameters, productive zones and its petrophysics characteristics of porosity and saturation. To validate the interpretation, besides using the geologic description of well cores and cutting sampling, it was used the description and information of the petroleum system of Camisea gas field and its regional geology. It was possible to present a comparison between Pluspetrol values, obtained through detailed methods, and those from the Quick Look log interpretation method used here, as well as an analysis of convergence between both results.
Ji, Yu Catherine Feng. "Comparative study of convective and diffusive transport phenomena within the opalinus clay of Mont Terri." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0409/document.
Повний текст джерелаThe safety of radioactive waste disposal facilities in deep geological formation depends on the evaluation of the rock confining properties and the processes governing radionuclides transfer. The thesis is conducted in the framework of Deep Borehole experiment of the Mont Terri project. The purpose of this research is to build confidence with regard to understanding relative importance of diffusive and convective phenomena withine the Opalinus Clay (OPA) and to identify the impact of a hydraulic and chemical transient behaviour on the transfers of fluid and solutes, and anomalous pressures generation.A first experimental stage enabled to acquire the advective and diffusive transport parameters, and the associated driving forces, necessary to the evaluation of fluid and solute fluxes between the OPA and its adjacent aquifers. Temperature and pressure measurements revealed a geothermal gradient of 8.5 °C/100 m and an excess of hydraulic head of at least 60 m.The chloride profile inversion by a Bayesian method with a Monte Carlo Markov Chain algorithm validates the paleohydrological evolution proposed in the litterature, considering a pure diffusive transport through the argillaceous formation. The contribution of osmotic transport phenomena was assessed by interpreting the pressure profile, using transient simulations that takes into account the temporal evolution of chlorinity and pressure during the geological scenario, and pseudo steady-state simulations. This profile is reproduced by evaluating the coupled advective flux, including pure advection, chemo-osmosis and thermo-osmosis, with a major contribution of the latter process
Teixeira, Cornélio Zampier. "Capacidade de carga de sapatas, estacas de pequeno diâmetro e tubulões curtos em função do SPT: um estudo em solos residuais de Gnaisses para a região Sul de Minas." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-10052018-104421/.
Повний текст джерелаThis work presents, at time, important aspects of Foundation Engineering at Southern Region of Minas Gerais State: a) systematization of the knowledge about regional geology; b) identification and characterization of practice in foundations; c) definition (though establishment of a data base) of most representative sub-soil profiles at main cities at the region; d) study of physical, chemical and geomechanical parameters of a typical soil; e) implementation of a experimental field for foundation studies at Federal University of Lavras, by execution of load tests. A large emphasis was given to items a, c and e. The study of foundations of low load capacity was prioritized when testing plates, isolated piles under compression and short drilled piers with sensors. Analysis such as form effects, depth, soil improvement and flooding on shallow foundations and variation of L/d on the lateral unity resistance by emphasizing the empiral equations based on SPT were all pointed out. Mathematical equations are presented for load estimation as function of SPT for small diameter piles and short drilled piers as well as a cost study where it can bem shown that the undistinguished alternative for piers is inadequate for some load values. In addition, due to soil spatial variability and safety factor increment on soils subject for colapse, recommendations on intensive use of SPT test are given.
Серженьга, О. В. "Науково-методичні засади оцінки характеру насичення пластів і положення газонафтового контакту з використанням геоелектричної моделі присвердловинної зони (на прикладі нафтогазоконденсатних родовищ Західно-Сибірської нафогазоносної провінції)". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2007. http://elar.nung.edu.ua/handle/123456789/4219.
Повний текст джерелаВ диссертации освещаются актуальные вопросы определения положения газонефтяного и водонефтяного контактов на «водоплавающих» нефтегазоконденсатных залежах по результатам геофизических исследований в открытом стволе скважины. Такие залежи являются объектами с очень сложными электрическими свойствами прискважинной зоны и требуют повышения информативности комплекса методов ГИС. Теоретически обосновано и доказано на практических исследованиях преимущество метода ВИКИЗ при определении параметров геоэлектрической модели пород-коллекторов, которые составляют терригенные отложения юрского комплекса ЗСНГП. Методологические свойства метода обеспечивают более однозначную оценку геоэлектрических параметров зоны проникновения и дают возможность выявлять окаймляющую зону. На базе геофизической информации по исследованиям разрезов скважин и информации по определению физико-химических свойств пластового флюида, создано физикогеологическую модель прискважинной зоны, которая характеризует зависимость электрических параметров прискважинной зоны от геологических свойств пород-коллекторов с разным типом пластового флюида. Доказано, что в течении первых 5-10 часов после раскрытия разреза по электрическим параметрам техногенных неоднородностей с высоким уровнем достоверности можно определить тип насыщающего пластового флюида. Скважинные исследования методом ВИКИЗ на Кынском и Харампурском нефтегазоконденсатных месторождениях показывают, что изменение параметров геоэлектрического разреза скважины происходит при прохождении скважиной через ГНК и ВНК. Предложено унифицированную схему использования соответствия газонасыщенных интервалов, выделенных по методу ВИКИЗ и методике ПИК, которая дает возможность определять положение ПНК как на этапе оперативного заключения, так и на этапе построения флюидальной модели залежи.
The Theses illustrates relevant issues of gas-oil and oil-water contacts position location in bottom water-drive oil-gas condensate reservoirs, belonging to laminated deposits of Jurassic bedrock in West-Siberian petroleum province. Such deposits are objects with very complicated electrical properties of the well bore zone, abruptly changing with the deposit’s height. Investigation of deposits with multicomponent reservoir fluid composition requires implementation of new geophysical wells survey methods and increase of useful information volume, extractable from the carried out complex of geographical information system (GIS). As a result of the author’s investigations, a number of scientific conclusions were drawn, which represent great practical importance in the field of geophysical survey of oil and gas wells and geological simulation for deposit fluidic structures with multicomponent composition of reservoir fluid. Advantages of the VIKIZ method for surveying lamellar terrigenous deposits of West-Siberian petroleum province of Jurassic horizon have been theoretically validated and proved in practice. Based on geophysical information and the information on formation fluid property investigations, main points and directions for a physical and geological model were formulated. The model characterizes relation between the penetration zone parameters and geological properties of reservoirs with different types of fluids. A method was developed which allows locating the OWC based on the parameters of the penetration zone and the low-resistivity zone. This can be important information for of specification standard oil-water surface interpretation results. A physical and geological model was created which allows discriminating oil-saturated reservoirs in the pay zone from gas-saturated ones and determines OWC position in bottom water-drive oil and gas condensate reservoirs of West-Siberian petroleum province. A unified scheme for gas-saturated formation comparison usage was suggested. The intervals were distinguished based on the VIKIZ method and PNK technique, which allowed determining GOC position at the operative conclusion stage, as well as at the stage of fluidic model deposit creation.
MARCHIONNI, SARA. "Caratteristiche isotopiche dei prodotti agroalimentari (vino) e dei loro substrati geologici con la finalità di definire parametri utili alla loro tracciabilità geografica." Doctoral thesis, 2014. http://hdl.handle.net/2158/850903.
Повний текст джерелаHuang, Ching-Feng, and 黃清峰. "A study of correlation between hydrogeological parameters and geological parameters." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/22713458914328786558.
Повний текст джерела國立中央大學
應用地質研究所
84
The direct current resistivity(DC)data and hydrogeological data from wells in Choshuichi alluvial fan is studied and, an empirical relation between hydrogeological parameters and geoelectrical parameters is obtained. The following conclusions is derived: 1. The distribution of vertical electric sounding curves is correlative tothe geologic settings in the study area. 2. Based on the qualitative analysis of DC data, three distinguished resistive zones can be recognized. They are Homei Fan area, Choshuichi Fan area and Peikangchi Fan area. The thickness of gravel deposits in Choshuichi Fan area is larger than that of the other two areas. 3. According to the empirical relation between hydrogeological parameters and geoelectrical parameters, the study area can be divided into six zones. Furthermore, a direct correlation between hydraulic conductivity and resistivity of the aquifer can be found in each zone except Chyongpuu area. 4. Based on the established empirical relation between transmissivity and geoelectrical parameters, the transmissivity at sounding points without well information can still be estimated with different way of approaches. The final results are comparable with the results computed directly from observed transmissivity of the wells. However, from practical point of view, our method can provide a more detailed distribution of transmissivity in the study area.
FIORUCCI, MATTEO. "Approaches of data analysis from multi‐parametric monitoring systems for landslide risk management." Doctoral thesis, 2018. http://hdl.handle.net/11573/1084976.
Повний текст джерелаKupsa, Jan. "Vliv geologických a půdních podmínek na kvalitativní parametry vín." Doctoral thesis, 2017. http://www.nusl.cz/ntk/nusl-425532.
Повний текст джерелаBauer, Johanna Frederike. "On the significance and predictability of geological parameters in the exploration for geothermal energy." Thesis, 2017. http://hdl.handle.net/11858/00-1735-0000-002E-E3D2-2.
Повний текст джерелаStiefenhofer, Johann. "Geostatistical analysis and simulation of a metallurgical parameter towards improved mining efficiency and confidence in the geological model of a kimberlite." Thesis, 2009. http://hdl.handle.net/10539/7099.
Повний текст джерелаTognaccini, Sofia. "Geomorfologia applicata all'individuazione dello stato di attività dei movimenti gravitativi e analisi di suscettibilità da frana in diversi contesti geologico-strutturali." Doctoral thesis, 2019. http://hdl.handle.net/2158/1198143.
Повний текст джерелаΚούκη, Αθανασία. "Τεχνικογεωλογικές-γεωτεχνικές παράμετροι και μηχανική συμπεριφορά σκληρών εδαφών και μαλακών βράχων στο σχεδιασμό υπόγειων τεχνικών έργων". Thesis, 2008. http://nemertes.lis.upatras.gr/jspui/handle/10889/810.
Повний текст джерелаThe formations " hard soils-soft rocks" were firstly examined, based on the international and Greek territory experience. The geological composition and structure of the formations were investigated, as well as seismicity, engineering geological characteristics and hydrogeological regime of the wider area of Patras Ring Road. The engineering geological-geotechnical map of the examined area was drawn up, on a scale of 1:5000, 170 borehole logs were evaluated and two main geotechnical units in these fine sediments were distinguished, Upper and Lower, in relation to the underground works (tunnels). These Units were shown on sections along the two branches of the project, on a scale of 1:5000/1:1000. This discrimination was furthermore documented through detailed microscopic-mineralogical analysis, evaluation of the in situ and laboratory tests, as well as of the recorded deformations of the tunnels cross sections (convergenes) and finally the performance of back analysis. The investigation comprises a useful guide for the examination of such formations, concerning the safe design of underground works.