Seismic Source Characterization and Underground Facility Modeling
Abstract not provided.
Publications
The influence of pre-stress on shear wave generation from explosions
Abstract not provided.
Advanced Approaches for the detection of underground tunnels
Abstract not provided.
Comparison of the seismic effects of soil disturbance and void space over shallow cut-and-cover tunnels
Abstract not provided.
Seismic-acoustic finite-difference wave propagation algorithm
An efficient numerical algorithm for treating earth models composed of fluid and solid portions is obtained via straightforward modifications to a 3D time-domain finite-difference algorithm for simulating isotropic elastic wave propagation.
3-D Seismic Imaging of Sedimentary Underplating at the Corner of the Cascadia Mantle Wedge
Abstract not provided.
Coupled and separated finite-difference calculations of seismo-acoustic wave propagation
Abstract not provided.
P- and S-body wave tomography of the state of Nevada
P- and S-body wave travel times collected from stations in and near the state of Nevada were inverted for P-wave velocity and the Vp/Vs ratio. These waves consist of Pn, Pg, Sn and Sg, but only the first arriving P and S waves were used in the inversion. Travel times were picked by University of Nevada Reno colleagues and were culled for inclusion in the tomographic inversion. The resulting tomographic model covers the entire state of Nevada to a depth of {approx}90 km; however, only the upper 40 km indicate relatively good resolution. Several features of interest are imaged including the Sierra Nevada, basin structures, and low velocities at depth below Yucca Mountain. These velocity structure images provide valuable information to aide in the interpretation of geothermal resource areas throughout the state on Nevada.
Dispersion and attenuation for the anelastic velocity-memory-stress system
SEG Technical Program Expanded Abstracts
Summary: Dispersion and attenuation relations are derived for both the continuous and discrete velocity-memory-stress systems governing 3D anelastic wave propagation in a standard linear solid. Phase speed and attenuation factor curves extracted from these relations enable optimal selection of spatial and temporal gridding intervals to achieve finite-difference algorithm efficiency, while simultaneously minimizing numerical inaccuracy.
Elastic Wave Radiation From A Resonating Line Source
Abstract not provided.
Finite-difference modeling of 3D seismic wave propagation in high-contrast media
SEG Technical Program Expanded Abstracts
Stable and accurate numerical modeling of seismic wave propagation in the vicinity of high-contrast interfaces is achieved with straightforward modifications to the conventional, rectangular-staggered-grid, finite-difference (FD) method. Improvements in material parameter averaging and spatial differencing of wavefield variables yield high-quality synthetic seismic data.
Results 126–136 of 136