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- 4Seismic imaging
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Elastic Least-squares Reverse Time Migration and Elastic Gauss-Newton Full-waveform Inversion
DownloadFall 2018
With the fast development of high-performance computing resources, imaging and inversion techniques in the exploration geophysics community are moving from simplified methods to more complex methods that honour as far as possible the physics of wave propagation. Multiparameter imaging and...
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Fall 2012
Convergent plate boundaries have played an important role in the growth and assembly of the modern continents. To obtain a better understanding of the tectonic processes in these boundaries, it is necessary to constrain the rheology of the crust and upper mantle in these regions. Magnetotelluric...
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Spring 2018
Conventional seismic migration operators produce an image that suffers from low resolution, sampling artifacts, and poorly balanced amplitudes. An improved image can be obtained by casting migration as a least-squares optimization problem in which the goal is to minimize the difference between...
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Fall 2018
The Western Canada Sedimentary Basin (WCSB) resides in a transition region from the Precambrian Canadian Shield to the Phanerozoic Cordillera. This broad foreland area has undergone more than three billion years of tectonic evolution from the Paleoproterozoic assembly of the Laurentian craton to...
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Fall 2020
The advent of modern supercomputers, in conjunction with larger, more comprehensive datasets, has led to a paradigm shift in seismic imaging. Full waveform inversion is routinely employed as a tool to estimate subsurface properties of the Earth with high resolution. The method fits simulated...
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Fall 2022
The Canadian Cordillera (mountain belts) in western Canada has a high elevation (~1.5 km above sea level), thin crust (~35 km) and thin lithosphere (50-70 km). In contrast, the Laurentian Craton to the east has a low elevation (near sea level) and thicker crust and lithosphere (~40 km and >200...
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Tungsten skarn deposits from the Canadian Cordillera: paleogeographic and geochemical controls on ore distribution
DownloadSpring 2022
Tungsten is a critical metal. Critical metals are strategic metals with associated economic, social, energy, geostrategic and environmental issues. As a result, the need to monitor and to secure local supplies of critical elements, including tungsten, has become a strategic priority for many...