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天文学 & 地球科学 : 学术学位
Crustal deformation across the Galicia Bank of offshore Iberia from seismic reflection data: Processing, interpretation, and reconstruction.
The Iberia Margin is an excellent example of a passive rift. Multi-Channel Seismic (MCS) data consisting of the Line 14 reflection profile from the 1997 Iberia Seismic Experiment were processed and interpreted. Enhanced processing attenuated pervasive water-bottom multiple noise. MCS data image an e
The marriage of eolian rock properties and the style of structural deformation of the Nugget Formation; Anschutz Ranch East field: Northeast Utah and southwest Wyoming.
The Nugget Formation in the Anschutz Ranch East field, northeast Utah and southwest Wyoming, provides an example of how eolian rock properties have considerable influence on the style of structural deformation. Both new and existing subsurface data were integrated for a detailed characterization of
Landscape changes in a coastal lagoon system, Jalisco, Mexico: Implications for Barra de Navidad lagoon.
Changes in land cover and land use patterns in the Barra de Navidad coastal lagoon system in Jalisco, Mexico were assessed using Landsat imagery, GIS and landscape metrics. Two sub-images from 1985 (Landsat TM) and 2000 (Landsat ETM+) were used to evaluate changes in six categories: lagoon, agricult
Investigation of active faulting at the Emigrant Peak fault in Nevada using shallow seismic reflection and ground penetrating radar.
The objective of this study was to assess fault displacement, off-fault deformation, and alluvial fan stratigraphy at the Emigrant Peak fault zone (EPFZ) in Fish Lake Valley, Nevada utilizing shallow seismic reflection (SSR) and ground penetrating radar (GPR) geophysical imaging methods. A three-dim
The Hualca Hualca-Ampato-Sabancaya (HHAS) stratovolcanic complex and the adjacent Andahua Group scoria cone fields are genetically related. 143Nd/144Nd and 87Sr/86Sr isotopic data indicate that both the Andahua and HHAS complex magmas are generated from the same source and evolve via fractional crys
Elaboration d'une classification de terrain en milieu de pergelisol, a l'aide d'un SIG, en vue de l'amenagement du territoire: Le cas de Salluit, au Nunavik (French text).
Dans un contexte ou la stabilite du pergelisol est mise en danger par les changements climatiques, le village nordique de Salluit, en pleine explosion demographique, fait face a un imposant defi d'amenagement de son territoire. La presente etude tente de demontrer que l'utilisation d'outils geomatiq
Laboratory determination of seismic anisotropy in sedimentary rock from the Western Canadian Sedimentary Basin.
Seismic anisotropy is the variation of wave speed through different directions in a material. Preferential alignment of minerals, layering, and preferred orientation of porosity all cause seismic anisotropy to be observed in many crustal rocks. Shale, in particular, exhibits a relatively large degre
Large-scale storage elements affect amounts of overland flow reaching streams and the amount of recharge to the groundwater and should be considered explicitly in hydrologic modelling. This study was undertaken to establish a procedure for incorporating GIS-based representations of depression geomet
Surface and subsurface fault and fracture systems with associated natural gas production in the Lower Mississippian and Upper Devonian, Price Formation, southern West Virginia.
Production from natural gas deposits is often enhanced by fault and fracture systems associated with reservoirs. This study presents analyses of fault and fracture systems within the Mississippian Price Formation in Southern West Virginia using subsurface well data and fracture data from surface ana
An investigation of the influence of surface roughness on reflection coefficients measured by a chirp sonar using a laser profiling of the seafloor.
This research investigates the validity of an acoustic propagation model by comparing theoretical reflection coefficients, function of frequency, to FAU chirp sonar measurements (chirp sub-bottom profiler). An acoustic model has been implemented to estimate the spectrum of energy reflected from sand
Mixed pairs give insight into the nature of simple galaxy interactions which contain only a single gas-rich component. These mixed pairs challenge galaxy formation models which view environmental factors as the sole predictor of pair morphology, they offer the best opportunity to view cross-fueling
This study utilized a 3-D seismic volume and 35 wells from three deepwater Gulf of Mexico fields (Cooper GB388, Llano GB386, and Habanero GB341) to determine the time-equivalent sequence stratigraphic framework within a deepwater salt withdrawal mini-basin setting. These fields are located within th
The mass growth and heat budget equations of a hailstone model were extended to allow for oblate forms with a rough surface. This hail growth model was coupled with a one-dimensional steady-state cloud model to predict the maximum hail size for Alberta hailstorms. Model runs were initialized with pr
Nitrate loading in ground water from eastern San Joaquin Valley, California using delta nitrogen-15 and delta oxygen-18 isotopic ratios.
Nitrate concentrations in parts of the San Joaquin Valley have been found to exceed the U.S. Environmental Protection Agency's maximum contaminant level (MCL) for drinking water. Twenty wells located along a 4.6 km transect southeast of Fresno County were sampled for nitrate content. Vineyards and o
Ce projet de maitrise, developpe en partenariat avec le CERM de l'UQAC et les compagnies SOQUEM INC. et Ressources Sirios, avait comme objectif principal d'etablir la chronologie des evenements geologiques de la propriete Aquilon, afin de situer la mise en place d'un systeme aurifere filonien. Il de
Opal-A is the main component of siliceous sinters in many terrestrial systems, and it commonly preserves silicified microorganisms. Opal-A from the Taupo Volcanic Zone (North Island, New Zealand) yielded reflectance (wavelengths between 0.5-25 mum) and absorbance spectra (wavelengths between 2.5-14
Reservoir conditions, such as pore pressure and fluid saturation levels, will change during the production of fluids and enhanced oil recovery. These changes will also influence the seismic wave properties of the rock. In order to better understand its seismic response, compressional and shear wave
Tertiary volcanic stratigraphy of the Diamond and Fort Sage Mountains, northeastern California and western Nevada: Implications for development of the northern Walker Lane.
The Honey Lake fault zone is one of four mayor, northwest-striking, right-lateral faults comprising the northern Walker Lane. GPS geodetic measurements indicate that the northern Walker Lane accommodates ∼10% of relative motion between the North American and Pacific plates. Regional relations su
Numerous intrusions, which were emplaced along the boundary between Laurentia-Baltica and the North American cratonic nuclei at approximately 1750 Ma. They are interpreted as an episode of late post-Penokean accretionary cratonic growth. All of the intrusions, with the exception of the Wanapitei Com
Stalagmite based paleoclimate reconstruction, northern Venezuela: A record of Caribbean Holocene climate change.
Northern Venezuela stalagmites from Cueva Zarraga were analyzed for their delta 18O and delta13C values and dated using U/Th disequilibrium. Goals included producing a terrestrial record of Caribbean/South American climate change; determine the expressions of Northern Hemisphere climate change in th