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Spatial patterns of bedrock weathering at the hillslope scale inferred via drilling and multi-scale geophysical methods
(2018-08-17)
The critical zone (CZ) comprises the near-surface region of the Earth where biological, physical and chemical weathering processes form porous soil and weathered bedrock from initially fresh bedrock. The structure of the ...
Analysis of GPU-based convolution for acoustic wave propagation modeling with finite differences: Fortran to CUDA-C step-by-step
(2014-05)
By projecting observed microseismic data backward in time to when fracturing occurred, it is possible to locate the fracture events in space, assuming a correct velocity model. In order to achieve this task in near real-time, ...
Single-crystal elasticity of the lower-mantle ferropericlase (Mg0.92Fe0.08)O
(2014-05)
This study focuses on investigating the effect of the electronic spin transition of iron on the elasticity of the candidate lower mantle ferropericlase (Mg,Fe)O. This may be relevant to our understanding of the seismic ...
Seismic and well log data integration using data-matching techniques
(2018-05-03)
Relating well log data to seismic data is an important step in integrated reservoir characterization studies. Traditionally, an interpreter uses well log data, which has high vertical resolution but little lateral coverage, ...
Time-lapse seismic AVAz in the Stocker Field
(2018-05-03)
Organic rich Murdock reservoirs require hydraulic stimulation to be economically productive. Zones of high fracture density are desired due to the increase in permeability they would have. Thus, fracture characterization ...
Feasibility of isotropic inversion in orthorhombic media : the Barrett unconventional model
(2016-05)
Geophysicists often relegate shale reservoirs as having higher symmetries (e.g., transversely isotropic (TI) or isotropic) than what reality demonstrates. Routine application of TI (or even isotropic) algorithms to ...
Seismic diffraction imaging methods and applications
(2014-05)
Seismic waves can either be reflected or diffracted by subsurface objects depending on the object's geometry. Diffactions can be used to determine details about the small-scale features that generate them, such as karsts, ...