Relevant bibliographies by topics / Submarine geology

Academic literature on the topic 'Submarine geology'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Submarine geology.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Submarine geology"

1

Harland, W. Brian, Isobel Geddes, and Paul A. Doubleday. "Chapter 11 Southern Svalbard:Bjørnøya and submarine geology." Geological Society, London, Memoirs 17, no. 1 (1997): 209–26. http://dx.doi.org/10.1144/gsl.mem.1997.017.01.11.

Full text
Abstract:
The area south of Spitsbergen (about 76°31'N) to latitude 74°N, and between longitudes 10°E and 35°E, by which Svalbard was first defined, contains the small island of Bjørnøya (Bear Island, Bären Insel) and the rest is sea (Fig. 11.1).The 500 m isobath conveniently separates the edge of the Barents shelf from the Norwegian Sea Basin which runs south from Spitsbergen between 14° and 16°30'E. To the east, the large shallow area, Spitsbergenbanken, less than 100 m deep, supports Bjørnøya at its southwestern end, extends northeast to Hopen and joins Edge°ya. It is separated from Spitsbergen to the north by the Storfjordyrenna and to the east by Hopendjupet. These submarine valleys appear to drain westwards into the ocean deep with deltaic fronts convex westward.This chapter focuses first on Bjørnøya which though small is a key outcrop in the Barents Sea and distinct in many respects from Spitsbergen being about 250 km distant. The chapter then surveys a little of what is known of the surrounding sub-sea area.Bjørnøya (20 km N-S and 15 km E-W), as the southern outpost of Svalbard, has long been a key to Svalbard geology since it is generally free all year from tight sea ice. But though its location is convenient, its cliffs generally bar access. Indeed there are very few places where landing by other than inflatable dinghy are feasible. After the island had been claimed by a Norwegian syndicate in 1915 mining of Tournaisian coal began in 1916 and exported over 116000
APA, Harvard, Vancouver, ISO, and other styles
2

GINSBURG, G. D., and V. A. SOLOVIEV. "Russian Research on Submarine Gas Hydrate Geology." Annals of the New York Academy of Sciences 715, no. 1 Natural Gas H (April 1994): 484–86. http://dx.doi.org/10.1111/j.1749-6632.1994.tb38862.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Dobbs, Stephen C., Tim McHargue, Matthew A. Malkowski, Jared T. Gooley, Chayawan Jaikla, Colin J. White, and George E. Hilley. "Are submarine and subaerial drainages morphologically distinct?" Geology 47, no. 11 (September 25, 2019): 1093–97. http://dx.doi.org/10.1130/g46329.1.

Full text
Abstract:
Abstract The qualitative resemblance between terrestrial and submarine branched valley networks has led to speculation that common underlying processes control their formation. However, quantitative comparisons have been impeded by methodological limitations and coarse resolution in marine systems. We analyze channel concavity and steepness indices of 23 terrestrial and 29 submarine catchments to determine whether their profile morphologies are distinct. Statistical comparisons of these quantities demonstrate that concavity indices in submarine systems are, in general, lower than in subaerial systems, and that submarine tributaries are steeper than their associated mainstem. These differences may reflect distinct drainage formation mechanisms and dynamics of submarine sediment gravity flows as compared to overland flow processes.
APA, Harvard, Vancouver, ISO, and other styles
4

Maier, Katherine L., Charles K. Paull, David W. Caress, Krystle Anderson, Nora M. Nieminski, Eve Lundsten, Benjamin E. Erwin, Roberto Gwiazda, and Andrea Fildani. "Submarine-fan development revealed by integrated high-resolution datasets from La Jolla Fan, offshore California, U.S.A." Journal of Sedimentary Research 90, no. 5 (May 7, 2020): 468–79. http://dx.doi.org/10.2110/jsr.2020.22.

Full text
Abstract:
ABSTRACT New high-resolution datasets across La Jolla submarine fan, offshore California, illuminate low-relief, down-dip widening conduits emanating from a deep-sea channel that deposited a combination of laterally extensive sand strata seemingly crisscrossed by distributary patterns. Extensive coverage of this sector of the seafloor shows submarine-fan architecture and morphologies essentially different than distributary channelized patterns characteristic of subaerial systems and previous conceptual models of submarine fans. The main La Jolla channel, connected to La Jolla Canyon, loses confinement by widening, decreasing in relief, and developing scoured margins across kilometers-long down-slope and lateral distances. Two scales of distributary patterns are associated with sand-rich deposits down-system from, and outside of, fully formed channels. A larger-scale distributary pattern is identified in backscatter and bathymetry from trains of preferential erosion associated with laterally continuous repetitive steps that extend for kilometers outside channel confinement and may represent net erosional upper-flow-regime transitional bedforms. Smaller-scale distributary backscatter patterns in unconfined sand-rich deposits originate from the wide, low-relief channel. We suggest that the newly imaged La Jolla seascape displays sedimentary features that may be common on deep-sea fans but missed in previous lower resolution studies of submarine fans. Thus, La Jolla provides the basis for integrating previously enigmatic and (or) incomplete images of submarine fans. High-resolution seafloor, subsurface, and sample datasets highlight the importance of channel widening, headward erosion, and unconfined flows in La Jolla submarine-fan development, and may be relevant to other sandy submarine fan systems.
APA, Harvard, Vancouver, ISO, and other styles
5

Tarazona, Darwin Mateus, Jorge Prieto, William Murphy, Julian Naranjo Vesga, Daniel Rincon, Carlos Hernandez Munoz, Hernan Madero Pinzon, Anderson Mora Mora, and Mateo Acuña-Uribe. "Submarine landslide susceptibility assessment along the southern convergent margin of the Colombian Caribbean." Leading Edge 42, no. 5 (May 2023): 344–59. http://dx.doi.org/10.1190/tle42050344.1.

Full text
Abstract:
Submarine landslides are a mixture of rock, sediment, and fluids moving downslope due to a slope's initial event of mechanical failure. Submarine landslides play a critical role in shaping the morphology of the seafloor and the transport of sediments from the continental shelf to the continental rise in the southern margin of the Colombian Caribbean. Two fundamental considerations can be highlighted: first, mass transport complexes produced by submarine landslides encompass significant portions of the stratigraphic record; second, these mass movements could affect underwater infrastructure. The mapping of the Southern Caribbean seafloor using 3D seismic surveys and multibeam bathymetry data in an area encompassing 59,471 km2 allowed the identification of 220 submarine landslides with areas ranging between 0.1 and 209 km2. Distinctive characteristics were found for submarine landslides associated with canyon walls, channel-levee systems, tectonically controlled ridges, and the continental shelf break. The analysis of the relationship between submarine landslides and seafloor morphological features made it possible to estimate a mass movement susceptibility map that suggests the following considerations: first, structural ridges and adjacent intraslope subbasins related to the South Caribbean Deformed Belt are more likely to be submarine landslide hazards; second, the continental shelf break and channelized systems produce a moderate submarine landslide hazard potential; and third, deep marine systems with a slope less than 5° show the lowest submarine landslide hazard potential. This work contributes to the understanding of submarine landslides in the study area through the presentation of conceptual diagrams that provide additional visual elements facilitating the level of abstraction necessary for visualizing bathymetric data. Likewise, the mass movement susceptibility map presented herein gives insights for future studies that seek to evaluate geohazards in the southern Colombian Caribbean margin.
APA, Harvard, Vancouver, ISO, and other styles
6

Polonia, A., M. H. Cormier, N. Cagatay, G. Bortoluzzi, E. Bonatti, L. Gasperini, L. Seeber, et al. "Exploring submarine earthquake geology in the Marmara Sea." Eos, Transactions American Geophysical Union 83, no. 21 (2002): 229. http://dx.doi.org/10.1029/2002eo000158.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Li, Yuting, and Peter D. Clift. "Controls on grain-size variability in the Holocene fill of the Indus Submarine Canyon." Journal of Sedimentary Research 93, no. 2 (February 8, 2023): 71–87. http://dx.doi.org/10.2110/jsr.2022.038.

Full text
Abstract:
ABSTRACT What processes control grain size and bed thickness in submarine canyon deposits? Erosive, shelf-cutting canyons contrast with accretionary basin-floor submarine fan accretionary channels because the former tightly constrain turbidity flows in deep channels. This study addresses such a deep-water depositional system in the Indus Submarine Canyon using a series of cores collected along the canyon. Grain-size analysis was conducted for turbidite and hemipelagic sediment deposited in the Holocene Indus Submarine Canyon mostly by diffuse, fine-grained turbidity currents and hemipelagic hypopycnal plumes. We investigate the links between sedimentary grain size, bedding thickness, facies, and canyon morphology. Well-sorted silt in layers mostly < 2 cm thick dominates the canyon. Core sites in the canyon located downstream of knickpoints have coarser, less well sorted sediments because of current acceleration in these areas and then the slowing of flows downslope. Sediments fine with increasing height above the canyon thalweg, implying deposition from a turbulent plume head. The great depth of the canyon, caused by the exceptionally wide shelf and steep slope, prevents channel overspill which controls sedimentation and channel form in submarine fans. Thalweg sediment fines down-canyon into the mid canyon, where sediment bypassing is inferred. The thickest turbidites are found in the sinuous lower canyon where the gradient shallows from ∼ 0.7° to 0.3°. However, canyon gradient has little impact on mean grain size, but does correlate with bed thickness. The active canyon channel, located in a channel belt gradually becomes less steep, more meandering, and narrower farther downstream. Sinuosity is an influence on turbidite bedding thickness but does not control grain size, in contrast to the situation in submarine-fan channel–levee complexes. Compared to the well-known, more proximal Monterey Canyon of California the grain sizes are much finer, although both systems show evidence of > 200 m plume heads.
APA, Harvard, Vancouver, ISO, and other styles
8

Li, Cheng, Tai Quan Zhou, Sha Sha Jiang, and Jie Kong. "Finite Element Analysis for the Stress Field and Seepage Field Interaction within Qingdao Submarine Tunnel Rockmass." Applied Mechanics and Materials 405-408 (September 2013): 1278–82. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.1278.

Full text
Abstract:
The submarine geology characteristic for Qingdao submarine tunnel is fracture and fragmentation with smash rock mass and unevenly distributed rock mass strength. The submarine tunnel is excavated in a weathered rock mass containing water. Before the tunnel lining is constructed, it is important to assure the stability and safety for the rock tunnel and tunnel lining structure during construction and operational periods. As the submarine tunnel is under severe condition, the rock mass stabilization is to a large extent to be determined by the underwater seepage effect. It is fundamental to investigate how the seawater interacts with the tunnel rock mass stress field. To investigate the interaction between the rock mass seepage field and the secondary stress field, the nonlinear finite element software ABAQUS is used to analyze the interaction behavior between the rock mass seepage effect and the tunnel secondary stress field. The rock mass seepage field, stress field are analyzed in detail using the numerical simulation method. Also, the distribution of the tunnel rock mass plastic region is obtained. The numerical analysis results provide guidance for the submarine tunnel construction.
APA, Harvard, Vancouver, ISO, and other styles
9

Metivier, F., E. Lajeunesse, and M. C. Cacas. "Submarine Canyons in the Bathtub." Journal of Sedimentary Research 75, no. 1 (January 1, 2005): 6–11. http://dx.doi.org/10.2110/jsr.2005.002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Soloviev, V., and G. D. Ginsburg. "Formation of submarine gas hydrates." Bulletin of the Geological Society of Denmark 41 (March 30, 1994): 86–94. http://dx.doi.org/10.37570/bgsd-1995-41-09.

Full text
Abstract:
Submarine gas hydrates have been discovered in the course of deep-sea drilling (DSDP and ODP) and bottom sampling in many offshore regions. This paper reports on expeditions carried out in the Black, Caspian and Okhotsk Seas. Gas hydrate accumulations were discovered and investigated in all these areas. The data and an analysis of the results of the deep-sea drilling programme suggest that the infiltration of gas-bearing fluids is a necessary condition for gas hydrate accumulation. This is confirmed by geological observations at three scale levels. Firstly, hydrates in cores are usually associated with comparatively coarse-grained, permeable sediments as well as voids and fractures. Secondly, hydrate accumulations are controlled by permeable geological structures, i.e. faults, diapirs, mud volcanos as well as layered sequences. Thirdly, in the worldwide scale, hydrate accumulations are characteristic of continental slopes and rises and intra-continental seas where submarine seepages also are widespread. Both biogenic and cat­agenic gas may occur, and the gas sources may be located at various distances from the accumulation. Gas hydrates presumably originate from water-dissolved gas. The possibility of a transition from dissolved gas into hydrate is confirmed by experimental data. Shallow gas hydrate accumulations associated with gas-bearing fluid plumes are the most convenient features for the study of submarine hydrate formation in general. These accumulations are known from the Black, Caspian and Okhotsk Seas, the Gulf of Mexico and off northern California.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Submarine geology"

1

Everett, Keith R. "USW area analogs." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FEverett.pdf.

Full text
Abstract:
Thesis (M.S. in Meteorology and Physical Oceanography)--Naval Postgraduate School, June 2005.
Thesis Advisor(s): D. Benjamin Reeder, Mary Batteen. Includes bibliographical references (p. 119-121). Also available online.
APA, Harvard, Vancouver, ISO, and other styles
2

Lau, Chi-tong Andy. "Marine geological model in Mirs Bay, NE Hong Kong, using marine seismic reflection." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40722405.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sánchez, Serra Cristina. "Tectonic evolution of the São Vicente area and tsunamigenic potential of the active structures in the SW Iberian margin: Implications for hazard assessment." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/673613.

Full text
Abstract:
The southwestern margin of the Iberian Peninsula, which includes the Gulf of Cadiz, is characterized by a present-day active deformation mainly driven by the NW-SE trending convergence between the African and Eurasia plates. In addition, this area hosts some of the largest earthquakes occurred in Western Europe. For this reason, in this PhD Thesis, tectonic and sedimentary processes in the Cape of São Vicente area are identified, important faults of the SW Iberian margin are analysed with high-resolution data, and 3D fault-plane models of the main active structures in the study area, to carry on tsunami simulations, are done. Related to the first issue, in the Cape of São Vicente area the largest submarine canyon in the external part of the Gulf of Cadiz is developed, the São Vicente Canyon. Their dynamics are highly conditioned by the convergence between the Eurasian and African plates and it is controlled by three current-active thrust faults: the Marquês de Pombal Fault, the São Vicente Fault and the Horseshoe Fault. The origin of the canyon is fully tectonic, as it shows a strong structural control. The main sediment source of the canyon is related to the disintegration of canyon flanks and the Mediterranean Outflow Water sedimentary deposits. Due to the canyon retrogressive erosion, submarine slides and scars are the main seafloor morphologies. The São Vicente Canyon is a clear example of a diachronic and segmented canyon developed since the Late Miocene in an area of active plate tectonics. Linked to the second issue, high-resolution data (autonomous underwater vehicle bathymetry and high-resolution 2D multichannel seismic profiles) allow to characterize, in detail, the Lineament South and the Marquês de Pombal faults. The Lineament South strike-slip fault is the longest active structure in the study area that may generate one of the most powerful earthquakes in the SW Iberian margin. Both ends of the Lineament South fault raise the seafloor demonstrating its current activity. The main motion component of the fault is right-lateral, as the dislocated structures in both extremes of the fault suggest. Although, a vertical component cannot be excluded. The Marquês de Pombal fault is an active left-lateral reverse fault. As isochore maps and the distribution of the vertical slip evidenced, this structure was especially active from the Middle-Miocene until nowadays where its uplift control the incision and the activity of the São Vicente Canyon. Finally, to identify the most vulnerable areas to be affected by a tsunami in SW Iberia and NW Morocco, realistic tsunami models have been built modelling in detail the main active faults in the region, including: the Gorringe Bank, Marquês de Pombal, Horseshoe, North Coral Patch and South Coral Patch thrust faults, and the Lineament South strike-slip fault. Based on a large dataset of 2D multi-channel seismic profiles, 3D sub-surface models that involves dimensional complexities of the fault planes have been generated. Additionally, with the aim to know the influence of the slip distribution along the fault plane in tsunami simulations, various heterogeneous slip-distributions have been considered in the Horseshoe fault tsunami scenario. The results show that using more complex fault geometries and slip distributions, the peak wave height (about the mean sea level) at the coastline can double compared to simpler tsunami source scenarios from planar fault geometries. Therefore, complex fault geometries and non-uniform slip distribution should be considered in future tsunami hazard updates. Tsunami simulations also show that the presence of submarine canyons attenuates the wave heights that reach the coastline, while the submarine ridges and the shallow shelf increase it. The tsunami simulations done, reveal that the most dangerous faults for the Moroccan coast are the Horseshoe, Gorringe Bank and South Coral Patch; for the Spanish and the Algarve coasts is the Lineament South fault, while the Gorringe Bank is the fault that most affects the west coast of Portugal.
Aquesta tesis doctoral s’enfoca en caracteritzar les estructures actives del Golf de Cadis, la relació d’aquestes amb els processos sedimentaris de la zona i el seu potencial tsunamigènic. En el Golf de Cadis es desenvolupa un dels canyons més importants del marge atlàntic, el canyó de São Vicente (SVC). Aquest canyó i la seva activitat estan fortament condicionats per tres falles actives: la falla de Marquês de Pombal (MPF), la falla de Horseshoe (HF) i la falla de São Vicente. El SVC presenta un origen tectònic i un fort control estructural. La principal font de sediment, que alimenten el canyó, està relacionada amb la desintegració dels seus flancs i els dipòsits sedimentaris de les corrents submarines de la zona. El SVC és un clar exemple de canyó diacrònic i segmentat desenvolupat des de finals del Miocè fins l’actualitat en una zona de tectònica activa de plaques. Per fer un estudi detallat de la perillositat tsunamigènica de les falles de MPF, HF, NCPF (Falla de North Coral Patch), SCPF (Falla de South Coral Patch), GBF (Falla de Gorringe Bank) i LSF (Falla del Lineament South) s’ha avaluat la sensibilitat dels escenaris de tsunamis a la geometria dels plans de falla i la distribució del lliscament. Primer, s’han considerant plans de falla simples amb lliscament uniforme per a totes les falles. Seguidament, s’han realitzat models complexos en 3D dels plans de falla de MPF, NCPF, SCPF i HF en base a un gran conjunt de dades de perfils de sísmica multicanal 2D. Finalment, s’utilitzen diverses distribucions de lliscament heterogeni pel cas de HF. Els models de tsunami desenvolupats suggereixen que utilitzant geometries de falla complexes i distribucions de lliscament heterogènies, l'alçada màxima de l'ona a la costa es pot duplicar en comparació amb escenaris simples, on el tsunami és generat per una falla amb geometria planar. Les simulacions de tsunami realitzades revelen que les falles més perilloses per a la costa marroquina són HF, GBF i SCPF, mentre que per a les costes espanyoles i de l'Algarve és el LSF. GBF és la falla que més afecta la costa oest de Portugal.
APA, Harvard, Vancouver, ISO, and other styles
4

Micallef, Aaron. "Failure processes in submarine landslides : a geomorphological approach." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/55502/.

Full text
Abstract:
This thesis presents a novel technique for the quantitative characterisation of bathymetric data sets. The technique integrates three main geomorphometric methods: morphometric attributes and their statistical analyses, feature-based quantitative representation, and automated topographic classification. These methods allow useful morphological information to be extracted from bathymetric data and can significantly enhance submarine geomorphological investigations. The methods are applied to bathymetric data from the Storegga Slide, one of the largest known submarine landslides, to investigate three aspects of submarine mass movements: spreading, fractal statistics and morphology and slide development. The morphological signature of spreading, in the form of a repetitive pattern of ridges and troughs, covers at least 25% of the Storegga Slide scar. Two modes of failure can be identified for submarine spreading. The first involves retrogressive slide development via the unloading of the headwall. The second entails the extension of a thin coherent slab of semi-consolidated material downslope by gravity. Both modes of failure involve the break up of surface sediment units into coherent blocks and their displacement along planar slip surfaces. The block movement pattern entails an exponential increase of displacement, and thinning of the failing sediment, with distance downslope. Loss of support and seismic loading are the main potential triggering mechanisms of submarine spreading. Analysis of headwall morphologies within the Storegga Slide reveals the occurrence of spatial scale invariance. One explanation for this scale invariance is that the Storegga Slide is a geomorphological system that may exhibit self-organised criticality. Spatial scale invariance may also be linked to the retrogressive nature of the Storegga Slide. The shape and fractal dimension of headwalls, on the other hand, can be used as a proxy for the type and number of the formative mass movements. A detailed reconstruction of the development of the north-eastern Storegga Slide shows that after the initial evacuation of the surface sediment as turbidity currents, the area failed as an extensive spread. The spreading blocks subsequently underwent higher displacement and remoulding, and were partly removed by debris flows and turbidity currents. The renewed instability within the spreading areas may have been related to gas hydrate dissociation and pore pressure increases due in response to the changing overburden, and the distribution of contourite drift deposits within underlying palaeoslide scars.
APA, Harvard, Vancouver, ISO, and other styles
5

Amblàs, i. Novellas David. "Morfodinàmica sedimentària de marges continentals passius silicoclàstics / Sedimentary morphodynamics of siliciclastic passive continental margins." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/110347.

Full text
Abstract:
“El present és la clau del passat”. James Hutton (1788), amb aquesta prou coneguda asserció uniformista, posà els fonaments pel desenvolupament de la investigació geològica moderna des de la perspectiva actualista. L’estratigrafia es val d’aquest principi per interpretar l’origen de les formacions geològiques a partir de l’observació de processos i geometries actuals i subactuals. Alhora, la geomorfologia estudia els processos afaiçonadors del relleu per conèixer l’origen i l’evolució del paisatge actual. Conceptualment, aquesta Tesi se situa a cavall entre l’estratigrafia i la geomorfologia amb l’objectiu general de reconèixer el per què i el com de la variabilitat morfosedimentària dels marges continentals passius silicoclàstics a llarg termini. Per atènyer aquest objectiu adoptem la hipòtesi de partida següent: la variabilitat morfològica dels marges continentals silicoclàstics passius pot ésser classificada per categories de forma objectiva i sistemàtica. Les diferències morfològiques observades responen principalment a l’acció d’uns pocs processos sedimentaris claus. Els mètodes i conceptes emprats en aquesta Tesi són propis de la hidrodinàmica i la sedimentologia. L’observació detallada de la morfologia i l’estratigrafia dels marges continentals, junt amb l’estudi dels processos hidrodinàmics que les han generades i l’anàlisi de la variabilitat espaciotemporal de les condicions ambientals en què s’han format, permet establir lleis de transport geomòrfic, altrament dites lleis de la morfodinàmica. En els successius capítols d’aquesta Tesi abordem aquests aspectes mitjançant l’anàlisi de dades geofísiques de reconeixement del fons i del subsòl marins, amb un especial èmfasi en les xarxes de drenatge del talús continental i la conca profunda. Els resultats d’aquesta anàlisi se sintetitzen en el plantejament d’un model morfodinàmic predictiu sobre la forma del perfil longitudinal dels canyons submarins. Aquest model dóna peu a discutir sobre transitorietat i equilibri en les formes de drenatge observades a les dades geofísiques considerades. Així doncs, en aquest treball advoquem per la complementarietat i interdependència de les anàlisis observacionals i la modelització basada en la formulació teòrica de processos. Els principals resultats obtinguts en aquest treball demostren la possibilitat d’extreure informació sobre l’evolució de les conques sedimentàries a partir de l’estudi de les seves morfologies, tan modernes com relictes i fòssils, i indiquen la necessitat d’entendre els canyons submarins com a sistemes capaços d’evolucionar a partir de mecanismes netament deposicionals, a més dels mecanismes erosius ja prou coneguts. Aquests resultats es poden traduir en una millora de les prediccions estratigràfiques al talús continental, en un millor coneixement de la distribució de reservoris sedimentaris d’hidrocarburs o aigua en aquests ambients, i a replantejar els models establerts sobre el desenvolupament dels canyons submarins a escala global. La Tesi està formada per un compendi de quatre articles publicats en revistes pertanyents al Journal Citation Report de l’Institute for Scientific Information (JCR-ISI), i l’hem estructurada en set capítols. El Capítol 1 consisteix en una introducció general destinada a centrar el lector en el marc conceptual, geogràfic i metodològic en què s’ha elaborat l’estudi. Els capítols 2 a 5 corresponen als quatre articles publicats. El capítol 6 correspon a la síntesi i discussió general dels principals resultats presentats als quatre capítols anteriors. Al capítol 7 hi incloem un sumari de les conclusions més rellevants conjuntament amb algunes perspectives de futur sorgides arran d’aquest treball. Finalment, a l'Annex, hi incloem un treball de síntesi bibliogràfica on descrivim les principals característiques fisiogràfiques dels fons marins mediterranis.
Sedimentary morphodynamics of siliciclastic passive continental margins "The present is the key to the past". James Hutton (1788), with this well-known principle of uniformitarianism, established the basis of the modern geology by following the assumption of actualism. Stratigraphy makes use of this principle to interpret the origin of geological formations according to observations of modern and submodern processes and geometries. Geomorphology studies the processes that sculpt the Earth’s surface to understand the origin and evolution of present landscapes. The main objective of this Thesis, which is conceptually halfway between stratigraphy and geomorphology, is to understand the long-term morphosedimentary variability of siliciclastic passive continental margins. Our initial hypothesis is that the morphology differences among modern siliciclastic passive margins can be objectively and systematically categorized, and that these differences are mainly related to the action of a few key sedimentary processes. The methods and concepts we use in this study are based on hydrodynamics and sedimentology. The detailed observation of continental margin morphology and stratigraphy, the study of the hydrodynamic processes that control their evolution, and the analysis of changing environmental conditions through time and space facilitate the development of geomorphic transport laws (also known as morphodynamic flux laws) for predicting landscape forms and dynamics. In the following chapters we discuss these topics while analysing seafloor and subseafloor geophysical data, with a particular focus on submarine drainage networks. An important result of this analysis is a morphodynamic model that can explain the long-profile shape of submarine canyons. The model stimulates our discussion about the equilibrium and transience of drainage morphologies observed in the geophysical data set we present. In this work we advocate for the complementariness and interdependence of observational analyses and modeling of sedimentary processes. This Thesis demonstrates that much can be learned about the sedimentary evolution of submarine basins from the study of seascape morphologies, both modern and ancient, and that submarine canyons can evolve while remaining net depositional, beyond the broadened view of these features as purely erosive. These results can be translated to improved stratigraphic prediction in slope strata, a better knowledge of hydrocarbon and water resource distribution in these settings, and a broadened view of submarine canyon development.
APA, Harvard, Vancouver, ISO, and other styles
6

Rivera, Martínez Jesús. "El volcán Tagoro y el banco de Concepción: Estadíos juvenil y maduro de la evolución geomorfológica de montes submarinos en aguas canarias." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/436895.

Full text
Abstract:
Ademas de identificar y describir las formas del relieve, la geomorfologia tambien intenta descifrar los procesos y mecanismos causantes. Esto, que es válido para la geomorfología en general, lo es también para la geomorfología submarina. La mayoría de procesos geológicos que tienen lugar en el fondo del mar, en sus proximidades, y en su subsuelo, dejan una huella en el lecho marino que se puede observar medir e interpretar. Pero también es cierto, que además de los procesos geológicos, hay otros tipos de procesos físicos, químicos, biológicos y antropogénicos que también modelan el lecho de los océanos. Por otro lado, el mismo relieve submarino afecta a dichos procesos, confor- mando así un bucle de acción reacción. Lo ilustran las interacciones entre las corrientes de contorno y el fondo, o entre el substrato y las comunidades bentónicas. La ecosonda de multihaz es la herramienta más valiosa para el estudio de la geomorfología sub- marina y, en consecuencia, también lo ha sido para esta tesis. Los modelos de elevación digitales obtenidos a partir de datos de multihaz son el primer paso para el estudio integrado de la geomor- fologia de una regi6n o lugar, y la base para planificar actividades de muestreo. En esta tesis, la lo- calización precisa y la interpretación de los elementos del relieve han permitido situar los puntos de mayor interes para una inspecci6n detallada, ademas de guiar las tareas de muestreo y verificaci6n de lo observado e interpretado en los fondos marinos de las islas Canarias. El archipiélago canario está situado en el margen pasivo del África nor-occidental. Pero lejos de res- ponder a un modelo estructural sencillo y fácilmente interpretable, el contexto geológico regional del archipiélago es notablemente complejo y su origen objeto de debate. Además, el conjunto de edificios volcanicos de que forma parte el archipielago consta de mucho mas que de las siete islas principales, puesto que también lo integran un número considerable de montes y cerros submari- nos, que en conjunto configuran la provincia de montes submarinos de las islas Canarias, termino bastante más adecuado para referirse al enclave geológico en que se inscribe esta tesis. Los nuevos datos batimétricos de alta resolución recogidos en este trabajo, junto con otros datos complementarios, su analisis y la discusi6n de su significado, representan una contribuci6n original para una mejor comprensión del rompecabezas geológico de la provincia de montes submarinos de las islas Canarias. Se trata de una contribución que creemos que incluye elementos clave. Por un lado, hemos podido documentar la más reciente erupción submarina ocurrida en aguas del archipiélago, mar adentro de su isla más joven; El Hierro, cosa que ha permitido conocer mejor la contribución de este tipo de eventos a la formaci6n de los edificios volcanicos insulares. Por otro lado, hemos puesto de manifiesto la evoluci6n tardia de una antigua isla de extensi6n mas que notable, el actual banco de Concepción, actualmente sumergido por completo. La aplicación de técnicas como el álgebra de mapas o la geomorfometria, asi como la verificaci6n de interpretaciones mediante la observaci6n in situ y el muestreo, aportan objetividad y solidez cientifica a los resultados alcanzados. Uno de los resultados más relevantes del presente trabajo es la constatación de la sutil frontera que separa lo viejo de lo joven en la provincia de montes submarinos de las islas Canarias. Esto lo ilustra el surgimiento del volcán más joven de Canarias, en 2011, en el lecho marino al sur de El Hierro, al lado de un edificio volcanico de 132 millones de anos de edad: el rift o dorsal sur de El Hierro. Tam- bién nos parece particularmente relevante el papel de procesos geológicos y estructuras antiguas como substrato moderno de hábitats de especial interés, como arrecifes de corales de aguas frías y comunidades quimiosintèticas de aguas profundas, tales como las encontradas en el banco de Concepción.
A mes d'identificar i descriure les formes del relleu, la geomorfologia també mira d'escatir els processos i mecanismes causants. Això, que val per a la geomorfologia en general, també val per la geomorfologia submarina. La majoria de processos geològics que es donen al subsòl marí, al mateix fons i prop del fons, deixen una empremta observable, mesurable i interpretable en el fons marí. És cert, però, que a més dels processos geològics, hi ha altres tipus de processos físics, químics, biològics i antropogènics que també afaiçonen el fons dels oceans. Per altra banda, el mateix relleu submarí influencia aquests processos, tancant-se aixi una mena de circuit. Ho il•lustren les interaccions entre corrents de contorn i el fons, o entre el substrat i les comunitats bentòniques. L’ecosonda de multifeix és l’eina més valuosa per a l’estudi de la geomorfologia submarina i, en conseqüència, també ha estat l’eina principal d’aquesta tesi. Els models d’elevació digitals obtinguts a partir de dades de multifeix són el primer pas per a l’estudi integrat de la geomorfologia d'una regió o indret, i la base per planificar activitats de mostratge. En aquesta tesi, la localitzaci6 precisa i la interpretació dels elements del relleu han permès situar els punts de més interès per a una inspecci6 detallada, a més de guiar les tasques de mostratge i verificació d'allò observat i interpretat en els fons marins de les illes Canàries. L’arxipèlag canari està situat al marge passiu d’Àfrica nord-occidental. Però lluny d’obeir a un model estructural senzill i fàcilment interpretable, el context geològic regional de l’arxipèlag és força complex i el seu origen objecte de debat. A més, el conjunt d'edificis volcànics de que forma part l’arxipèlag consta de molt més que les set illes principals, doncs també l’integren un nombre molt alt de monts i turons submarins, el conjunt dels quals forma la província de monts submarins de les illes Canàries, un terme força més adequat per a referir-se a l’entorn geològic en que s’inscriu aquesta tesi. Les noves dades batimètriques d’alta resolució recollides en aquest treball, juntament amb altres dades complementàries, el seu anàlisi i la discussió del seu significat, representen una contribució original per a una millor comprensió del trencaclosques geològic de la província de monts submarins de les illes Canàries. Es tracta, però, d’una contribució que creiem que inclou elements clau. Per un costat, hem pogut documentar l’erupció submarina més recent ocorreguda en aigües de l’arxipèlag, enfora de la seva illa més jove, El Hierro, cosa que ha permès conèixer millor la contribuci6 d'aquests tipus d'esdeveniments a la formaci6 dels edificis volcànics insulars. Per un altre costat, hem fet palesa l’evolució tardana d’una antiga illa d’extensió més que notable, l’actual banc de Concepción, ara sota l’aigua. L’aplicació de tècniques de l’àlgebra de mapes i de la geomorfometria, aixi com la verificaci6 d'interpretacions mitjan;ant l'observaci6 in situ i el mostratge, donen objectivitat i solidesa científica als resultat assolits. Un dels resultats més rellevants del present treball és la constatació de la subtil frontera que se- para el que és vell del que és jove a la província de monts submarins de les illes Canàries, com ho il•lustra la formaci6 del volcà mes jove, l'any 2011 als fons del sud de El Hierro, al costat d'un edifici volcànic de 132 milions d'anys d'edat: el rift o dorsal sud d'El Hierro. També ens sembla particularment rellevant el paper de processos geològics i estructures antigues com a substrat modern d’hàbitats d’especial interès, com ara esculls de coralls d’aigües fredes i comunitats qui- miosintètiques d'aigües profundes, tal i com il•lustra el cas del banc de Concepción.
Beyond identifying and describing landforms, geomorphology aims at unveiling their causative processes and mechanisms. This, which applies to geomorphology in the broadest sense, is also valid for submarine geomorphology. Most of the geological processes that occur below, at and close to the seafloor leave an observable, measurable and interpretable imprint on it. However, it is also true that processes other than geological do shape the seabed as well. These include a ran- ge of physical, chemical, biological and anthropogenic processes. Moreover, the submarine lands- cape influences those processes in an action/reaction loop. This is illustrated by the interactions between contour currents and the bottom, or between the substratum and benthic communities. The multibeam echo sounder is the most valuable tool to investigate the geomorphology of the marine environment and, therefore, has been the main tool for this thesis. The Digital Elevation Models (DEMs) resulting from multibeam data are the first step for the comprehensive study of a region or site geomorphology, and the main reference for the planning of sampling activities. In this thesis, the precise location and interpretation of landforms, has allowed to pinpoint the ‘hot spots’ deserving detailed inspection, to guide sampling and to groundtruth the observations and interpretations made across the seafloor of the Canary Islands. The Canary archipelago is located on the passive continental margin of Northwest Africa. But far from responding to a simple and easy to interpret structural model, the geological setting of the archipelago is quite complex and its origin still debated. Furthermore, the cluster of volcanic edifices to which the archipelago belongs is much more than the main seven islands, as it also consists of a large number of seamounts and submarine knolls, altogether forming the Canary Is- lands Seamount Province, a more appropriate term to refer to the geological setting of this thesis. The new high-resolution bathymetric datasets gathered in this work, and other complementary data, together with the analysis and discussion of their meaning, represent a novel contribution for an improved understanding of the Canary Island Seamount Province geological puzzle. We think this contribution includes key elements. On one hand, we have been able to document the most recent submarine eruption around the archipelago, offshore its youngest island, El Hierro, which has resulted in a better knowledge of the contribution of this kind of events to the outbuil- ding of the volcanic edifices forming the islands. On the other hand, we have evidenced the late evolution of a rather large old island, Concepcion bank, now under water. The application of map algebra and geomorphometry techniques, jointly with the groundtruthing of interpretations by means of in situ observations and sampling provide scientific objectivity and robustness to the results achieved. One of the most noticeable outcomes of the present work is the finding of the narrow separation between the old and the young in the Canary Island Seamount Province, as illustrated by the eruption of the youngest submarine volcano in 2011 south of El Hierro besides to a 132 Ma old volcanic edifice off the south rift of El Hierro. The role of ancient geological processes and struc- tures as substratum for modern habitats of special interest also looks highly relevant, as illustrated by the cold-water coral reefs and deep-water chemosynthetic communities found in Concepcion Bank.
APA, Harvard, Vancouver, ISO, and other styles
7

Guerbuez, Kemal. "Identification and evolution of Miocene submarine fans, in the Adana Basin, Turkey." Thesis, Keele University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357046.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

AlShammary, Nawaf S. "Hetergenerous oil saturation in submarine channel and adjacent facies, monterey formation, point fermin, Palos Verdes, California." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527300.

Full text
Abstract:

Extreme heterogeneity in oil saturation between closely adjacent sandstone beds reflects different timing and degree of diagenesis. Understanding the distribution and origin of such heterogeneity is critical to effectively exploiting intercalated sandstone deposits within fine-grained unconventional reservoirs and in unraveling subtleties of stratigraphic traps. Sea cliff exposures at Point Fermin, California, expose a submarine channel facies within the largely hemipelagic facies. Separated by only meters, Point Fermin Sandstone is oil-saturated, whereas Altamira Shale sandstone is not. Samples were analyzed for porosity, permeability and fluid saturation in conjunction with thinsection petrographic analysis. Sandstones are primarily schist- bearing lithic arenites and the grains are cemented mostly by rhombic dolomite. Data show that both units have the same provenance but differ in the timing and type of diagenesis with shale-hosted sandstones generally showing earlier cementation. The degree and type of cementation occluded pore spaces to prevent hydrocarbon charging in the non-saturated sandstone.

APA, Harvard, Vancouver, ISO, and other styles
9

Hearne, Meghan E. "Investigation of submarine landslide deposits the northern margin of Puerto Rico /." Electronic version (PDF), 2004. http://dl.uncw.edu/etd/2004/hearnem/meghanhearne.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Rahman, Laiq. "The geochemical modelling of emergent life from submarine hydrothermal environments." Thesis, University of Glasgow, 2002. http://theses.gla.ac.uk/5716/.

Full text
Abstract:
Hydrothermal systems may have been more widespread in the Hadean due to a greater heat flux. To investigate this possibility, and unravel the mechanism(s) by which the pH of high-temperature vent fluids become acidic and what produces their distinctive black colour, reactions between model seawater and mafic/ultramafic rock were conducted. Results indicated that ancient, medium to high temperature (150-300°C), alkaline hydrothermal fluids would have precipitated carbonates, brucite, and calcite upon re-mixing with cold, slightly alkaline seawater and may have predominated in the Hadean. Acid pH was effected by the loss of magnesium from seawater and calcium loss from mafic rock. Black-smokers were unlikely in the Hadean as the ocean was probably acidic due to high levels of CO2. Water-rock reaction models were constructed to test the possibility that simple amino acids could have been generated in early hydrothermal fluids, and to see how pH and redox conditions affect their distribution (cf. Amend and Shock, 1998). Though concentrations of amino acids produced were negligible, amino acids were stable in low-temperature, alkaline, and reduced hydrothermal fluids and may have concentrated in the colloidal sieve comprising a hydrothermal mound. An extension of the experiment to determine if glycine could be condensed to higher carbon number amino acids (alanine, valine, leucine) under hydrothermal conditions, indicated that condensation may be 'pulled' by a decrease of H2O activity of the fluid. In conclusion, this study improved on previous environmental and reactant constraints by simulating the generation of inorganic prebiotic reactants from the local geochemical hydrothermal environment. Consequently, the quantity of chemical species such as hydrogen and sulfide available for organic synthesis were limited by the local geochemical settings in the model, whereas others have, often admittedly, used reactants in higher concentrations than were probably available when Life emerged.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Submarine geology"

1

Zekt︠s︡er, I. S. Submarine groundwater. Edited by Everett Lorne G and Dzhamalov R. G. Boca Raton, FL: CRC/Taylor & Francis, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Suirobu, Japan Kaijō Hoanchō. 5-manbun no 1 engan no umi no kihonzu kaitei chikei chishitsu chōsa hōkoku: Yorontō. [Tokyo]: Kaijō Hoanchō Suirobu, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Griscom, Sarah B. Marine geology: Research beneath the sea. [Washington, D.C.?]: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Mallik, T. K. Marine geology, a scenario around Indian coasts. New Delhi: New Academic Publishers, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Kaihatsukyoku, Japan Kagaku Gijutsuchō Kenkyū. Indoyō Taiheiyō purēto kyōkai kaiiki no tōko kaikōkei no chishitsu kōzō ni kansuru kenkyū, kenkyū seika hōkokusho: Shōwa 56-nen--60-nen. [Tokyo]: Kagaku Gijutsuchō Kenkyū Kaihatsukyoku, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Bersenev, I. I. Geologii͡a dna I͡Aponskogo mori͡a. Vladivostok: DVNT͡S AN SSSR, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

E, Reiss Thomas, and Geological Survey (U.S.), eds. Nearshore marine geologic investigations, Point Barrow to Skull Cliff, northeast Chukchi Sea. Menlo Park, Calif: U.S. Dept. of the Interior, Geological Survey, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

az-Navaes, Juan Di, and Jose Frutos. Geologi a marina de Chile. Valparai so, Chile: Comite Oceanogra fico Nacional de Chile, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

United States. Bureau of Land Management and Geological Survey (U.S.), eds. A summary of environmental geologic studies on the southeastern United States Atlantic Outer Continental Shelf, 1979-1982. [Reston, Va.?]: U.S. Dept. of the Interior, Geological Survey, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

I, Vasilʹev B., and Tikhookeanskiĭ okeanologicheskii institut im. V.I. Ilʹicheva., eds. Geologicheskoe stroenie i proiskhozhdenie Tikhogo okeana. Vladivostok: Dalʹnauka, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Submarine geology"

1

Gamboa, Davide, and Tiago Alves. "Geometry and Classification of Submarine Canyon Confluences." In Springer Geology, 797–801. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04364-7_150.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ewing, Maurice, and Bruce C. Heezen. "Some Problems of Antarctic Submarine Geology." In Antarctica in the International Geophysical Year: Based on a Symposium on the Antarctic, 75–81. Washington D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm001p0075.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chiou, W. A., William R. Bryant, and Richard H. Bennett. "Clay Fabric of Gassy Submarine Sediments." In Frontiers in Sedimentary Geology, 333–52. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4612-4428-8_37.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Shanmugam, G., R. J. Moiola, and J. E. Damuth. "Eustatic Control of Submarine Fan Development." In Frontiers in Sedimentary Geology, 23–28. New York, NY: Springer New York, 1985. http://dx.doi.org/10.1007/978-1-4612-5114-9_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Shanmugam, G., and R. J. Moiola. "Submarine Fan Models: Problems and Solutions." In Frontiers in Sedimentary Geology, 29–35. New York, NY: Springer New York, 1985. http://dx.doi.org/10.1007/978-1-4612-5114-9_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Guo, L. P., R. Liu, and S. W. Yan. "Low-Order Lateral Buckling Analysis of Submarine Pipeline Under Thermal Stress." In Springer Geology, 191–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-31671-5_33.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Bouma, Arnold H. "Introduction to Submarine Fans and Related Turbidite Systems." In Frontiers in Sedimentary Geology, 3–5. New York, NY: Springer New York, 1985. http://dx.doi.org/10.1007/978-1-4612-5114-9_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Posamentier, H. W., and R. D. Erskine. "Seismic Expression and Recognition Criteria of Ancient Submarine Fans." In Frontiers in Sedimentary Geology, 197–222. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4684-8276-8_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Weimer, Paul, and Martin H. Link. "Global Petroleum Occurrences in Submarine Fans and Turbidite Systems." In Frontiers in Sedimentary Geology, 9–67. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4684-8276-8_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Cameron, Richard L. "The Vanderford Submarine Valley, Vincennes Bay, Antarctica1." In Geology and Paleontology of the Antarctic, 211–16. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/ar006p0211.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Submarine geology"

1

S. Muradov, C., and R. A. Gavadova. "Potential Hazards Creates Activities of the Submarine Gas-Hydrate Bearing Mud Vulcanoes." In EAGE Conference on Geology and Petroleum Geology of the Mediterranean and Circum-Mediterranean Basins. European Association of Geoscientists & Engineers, 2000. http://dx.doi.org/10.3997/2214-4609.201406078.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Baztán, J., S. Berné, M. Canals, J.-L. Olivet, M. Rabineau, J.-P. Rénault, and J. Lofi. "Widespread Lgm Axial Incision in Submarine Canyons of the Western Gulf of Lions." In EAGE Conference on Geology and Petroleum Geology of the Mediterranean and Circum-Mediterranean Basins. European Association of Geoscientists & Engineers, 2000. http://dx.doi.org/10.3997/2214-4609.201406001.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Smith, M. Elliot, Noah J. Finnegan, and Erich R. Mueller. "DURABLE TERRESTRIAL GEOLOGY AND CATCHMENT SLOPE PROMOTE SUBMARINE CANYON HEADWALL INCISION." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-288090.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Liu, Xu, Hanhao Zhu, Qile Wang, Jiahui Wang, and Zhigang Chai. "Side-scan sonar based on convolutional neural network for target recognition classification of submarine aircraft wreckage image." In 2023 4th International Conference on Geology, Mapping and Remote Sensing (ICGMRS 2023), edited by Yi Wang and Tao Chen. SPIE, 2024. http://dx.doi.org/10.1117/12.3019703.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Morsy, A., H. Abou Hadid, T. Eid, T. Moustafa, N. Ibrahim, M. Abdel Hady, A. Adel, and M. Abudooh. "Unlock Hydrocarbon Potential of Al Wasl Exploration at Gulf of Suez -Egypt: Case Study for New Strategy-Based Decision to Test New Play Concept." In GOTECH. SPE, 2024. http://dx.doi.org/10.2118/219298-ms.

Full text
Abstract:
Abstract Objectives/Scope A new conceptual model for distribution of the Upper Rudeis Miocene Clastic reservoirs, along with a strategy-based decision to test new play concepts was the key to a successful exploration and appraisal campaign in the Central Gulf of Suez province. A successful journey led to unlock potential reserves as a field extension in a mature basin. This plan accounts for substantial expenses involving new platform construction, pipeline laying and drilling activities. Methods, Procedures, Process The distribution of the marine sands in the Gulf of Suez central province are not considered as submarine fans restricted to main bounding faults, but instead as an axial redistribution of distal turbidities of existing sediments inside the basin. This distribution is constrained by the intra rift half grabens and sub basins. Poor quality seismic data does not support the prediction of reservoir distribution trends. However, nearby wells encourage to move from known to unknow. Such an understanding of the Miocene sediments depositional fairways and distribution developed a new play concept of combined traps in such mature basin. Results, Observations, Conclusions A new geological understanding for Miocene reservoir distribution and trap styles in mature basin has led to explore the extension of Miocene reservoir producing in the Safa field in the central area of Gulf of Suez. Recent drilled wells increased the oil column of the producing field to more than 1200 ft with an "oil down to" contact. This doubled the booked reserves for the field and kept the door open for more appraisal wells in the area to define the reservoir extension through the introduced conceptual model. Considering alternative scenarios for reservoir distribution has led to ideas of drilling wells in the downdip direction with respect to possible oil water contacts rather than targeting the crest of the structures as previously. The results of this revised approach have served as crucial inputs to unlock new potential, refine and update development strategy. This directs investors to explore more hidden undiscovered hydrocarbon potential in a mature basin looking for such combined traps. Novel/Additive Information Unlocking new potential at mature basins specially under scarcity of data and poor data quality was achieved through introducing new conceptual model and full integration with multidiscipline to come up with full story. Proactive strategy of utilizing anticipated data, allowing for continual refinement of models to optimize field development strategies. Throughout the decades, extensive exploration and drilling activities have revealed the Gulf of Suez to be home to numerous oil fields, both onshore and offshore. These fields vary in size and production capacity. Undoubtedly, the main obstacle to future exploration in such a mature basin, in addition to the structure complexities of general rift basin structural geology, is the presence of severe multiples obscuring potential traps. Continued improvement in seismic image-enhancements remains the key to the discovery of significant new reserves. Meanwhile, the main drive for the new exploration concepts would come through new interpretation ideas and alternative conceptual models in terms of both structure and depositional settings. This allows a strategy-based decisions to test new play concepts to deliver the key to successful exploration campaign. Dolson et al., 2000 Described Gulf of Suez as a technologically constrained basin in a mature exploration phase. A multitude of the largest fields, such as Belayim Marine, Morgan and July are rotated fault blocks with 3-way and 4-way closures against sealing shales or evaporites. Exploration in synclinal lows for deep-marine turbidite stratigraphic plays remains essentially untested. Exploration in Miocene strata of the Gulf of Suez is complicated by syn depositional movement around fault blocks that has created complicated reservoir distributions. Figure 1.
APA, Harvard, Vancouver, ISO, and other styles
6

Smith, John R., and Jonathan Patrick Tree. "ENORMOUS RIFT ZONES, GIANT LANDSLIDES, AND UBIQUITOUS PALEO-REEF TERRACES: DETAILED SUBMARINE GEOLOGIC MAPPING REVEALS COMPLEXITY OF THE NORTHWESTERN HAWAIIAN RIDGE." In 113th Annual GSA Cordilleran Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017cd-292709.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Fisher, James E., Saba Esmailzadeh, and Jacob N. Fillingham. "Geological and Geotechnical Considerations for Floating Offshore Wind Infrastructure within the U.S. Atlantic OCS." In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32578-ms.

Full text
Abstract:
Abstract Current offshore wind activities within the Atlantic Outer Continental Shelf are within water depths suitable for fixed-bottom foundations, generally considered as water depths shallower than 60 m. Recent BOEM designated call areas within the Central Atlantic include two areas on the continental slope in water depths greater than 200 m that will require floating offshore wind turbines. The objective of this study is to expand upon a previously completed BOEM-funded desktop study and focus on the geological and geotechnical conditions and the engineering constraints for the deep-water Central Atlantic call areas E and F. This study focused on compiling public domain geophysical and geotechnical data to evaluate the seafloor and shallow subsurface geological and geotechnical conditions relevant to offshore wind within the area of interest. Data available from published scientific literature and government agencies were integrated and evaluated using GIS and seismic interpretation software to identify and map geohazards, seabed and subsurface conditions, and key stratigraphic geotechnical units. Our evaluation of the area of interest indicates generally favorable conditions for floating offshore wind development, with site-specific considerations to be factored into engineering design. Soil provinces with similar geologic characteristics and geotechnical properties include the upper slope (roughly 200 m to 2000 m water depths) and the lower slope (greater than 2000 m water depth). General sediment conditions for both these provinces include Holocene-Pleistocene age silts and clays with intervals of sandy clay or sandy layers related to mass transport deposits (MTDs) from gravity flows. A key difference between the provinces is the potential for older geological units, such as the coastal plain deposits (CPD) within the foundation depth of interest proximal to the upper slope, and a higher frequency of submarine landslide deposits within the lower slope. The potential for slope instability and steep seabed gradients will be a constraint for these developments, as well as the potential for hard grounds, such as submarine landslide blocks or authigenic carbonate/benthic features. Based on these conditions, the suitability of various anchor concepts is discussed.
APA, Harvard, Vancouver, ISO, and other styles
8

Mark-Moser, M., L. Romeo, R. Duran, J. R. Bauer, and K. Rose. "Advanced Offshore Hazard Forecasting to Enable Resilient Offshore Operations." In Offshore Technology Conference. OTC, 2024. http://dx.doi.org/10.4043/35221-ms.

Full text
Abstract:
Abstract Hazards in the offshore environment can imperil successful energy operations, whether those operations are conventional, renewable, or for decarbonization. The expanding accessibility of data science and the advanced applications of machine learning (ML) models creates an opportunity to assess potential hazards and the infrastructure they impact. We present a use case demonstrating the combined application of published ML tools to U.S. federal waters of the Gulf of Mexico, an actively explored region for offshore energy that is affected by variable metocean conditions and geologic processes contributing to potential hazards. This paper demonstrates the streamlined use of ML tools to illuminate potential cascading risk events posed by seafloor hazards to pipeline infrastructure, as well as the hypothesized fate and transport of released material in the event of a pipeline rupture. We apply an ML-informed submarine landslide susceptibility tool (ML-LSM) which analyzes spatial features including slope and sediment type using a gradient-boosted decision tree (GBDT) algorithm to produce a susceptibility map in addition to the Climatological and Instantaneous Isolation and Attraction Model (CIIAM), an advanced Lagrangian model to predict material transport based on typical metocean conditions. These models were applied to the Gulf of Mexico to produce spatial results based on the features respective to the seafloor and metocean environments. The Advanced Infrastructure Integrity Model (AIIM) tool, which uses big data and ML models including GBDT and artificial neural networks, was applied to provide a preliminary forecast for pipeline integrity. Intersections of submarine landslide susceptibility, potential for infrastructure integrity loss, and material transport are highlighted amongst the results, which are presented spatially. The combination of these models utilized ML analytics to provide multiscale insights into potential future risks to energy infrastructure. Results of AIIM, in corroboration with various reports, show most existing pipelines are forecasted to be operating past their original design life. The ML-LSM map indicates locations with high landslide susceptibility. Comparing the ML-LSM and AIIM results, we are able identify potentially vulnerable structures that are at greater risk, or those in areas with lower landslide likelihood that may be potential candidates for lifespan extension or retrofitting to support alternative energy strategies. The results of the CIIAM model are integrated to indicate material fate-and-transport complications in the event of infrastructure rupture. Areas of potential bias and recommendations for model tuning are also discussed.
APA, Harvard, Vancouver, ISO, and other styles
9

Hornfeld, Willi. "Status of the Atlas Elektronik’s Modular AUV Family." In 25th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/omae2006-92357.

Full text
Abstract:
As opposed to ROVs (Remotely Operated Vehicles), self-propelled, unmanned autonomous underwater vehicles (AUVs) are becoming increasingly important since, unlike ROVs they can operate completely self-sufficiently, i.e. independent of the carrier platform and cable at practically any depth and for long periods of time, require only minor technical and logistic support and can be used in regions which are inaccessible to manned submersibles or ROVs (e.g. under ice regions). In other words, AUVs are distinguished by a wide range of applications, the extremely high quality of data collected, their very cost-effective operation and the large standoff capability to the carrier platform, the latter bringing about a distinct improvement in terms of carrier platform safety e.g. for military missions. Due to these advantages over conventional systems, AUVs can be employed for a whole variety of applications, such as the following in the commercial sector: • Sea Bed Mapping, • Pipeline and Route Survey, • Inspection/Control, • Site Clearance, • Debris Survey, • Science – Search – Environment – Geology, • Harbour and ship’s hull inspection. Moreover AUVs will play an important role in the military scenario like mine countermeasure as well. Obviously, one single type of AUV will be unable to cover this entire spectrum if — above and beyond the aforementioned applications — one considers the different operating depths ranging from coastal regions (about 10 m) to deep water (approx. 4000 m) and the various possible carrier platforms (helicopters, ships, submarines, shore stations). On the other hand, the development and use of one specific type of AUV for one or a very limited number of mission types would be very expensive, both in terms of costs involved and necessary logistics, and would hardly be acceptable on the market. The solution to this problem is the “modularity” of the AUV subsystems as well as a family concept for the vehicle design. To implement this strategy, ATLAS ELEKTRONIK has forced the development and marketing of an AUV family for a wide array of missions. The family starts with the SeaFox-IQ, a very small and lightweight (40 kg) AUV for 300 m diving depth, based on the extreme successful mine disposal ROV SeaFox. The big brother is the SeaStout, a 100 kg AUV, designed for 300 m too. The SeaOtter Mk1 and SeaOtter Mk2 AUVs are 1500 kg and 1100 kg vehicles for 600 m operations. The leading edge is the AUV DeepC, a 2500 kg experimental vehicle developed for 4000 m depth and up to 60 h endurance. The ATLAS AUV family offer a lot of hard- and software commonality to ensure that serviceability is maintained, while having a high degree of “customisation” in key areas like payload sensor selection ensuring they will meet customer needs.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Submarine geology"

1

Hamilton, T. S. Georgia Basin: Submarine Geology and Geophysics. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/131179.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Huntley, D. H., P. T. Bobrowsky, D. C. Mosher, J. J. Clague, N J Roberts, and D. G. Lintern. Marine geology and landslides of the central Salish Sea, British Columbia: International Symposium on Submarine Mass Movements and their Consequences, field excursion guidebook. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2018. http://dx.doi.org/10.4095/313099.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Normark, W. R., and H. H. Herring. Annotated bibliography: Marine geologic hazards of the Hawaiian Islands with special focus on submarine slides and turbidity currents. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10189771.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Submarine geology' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography