Impact of Shale Anisotropy on Seismic Wavefield
Energies, 2019 During unconventional resources exploration, ignoring shale anisotropy may lead to wrong seismic interpretations, thus affecting the accuracy and credibility of sweet spots prediction and reservoir characterization.
Han Li +4 more
doaj +1 more source
Shear-Wave Splitting and Mantle Flow Beneath the Colorado Plateau and its Boundary with the Great Basin [PDF]
, 2008 Shear-wave splitting measurements from SKS and SKKS phases show fast polarization azimuths that are subparallel to North American absolute plate motion within the central Rio Grande Rift (RGR) and Colorado Plateau (CP) through to the western rim of the ...
Aster, Richard +7 more
core +1 more source
Seismic anisotropy in overburden [PDF]
SEG Technical Program Expanded Abstracts 2005, 2005 Seismic anisotropy produced by shales and fine shale/sandstone sequences in overburden is analyzed by using laboratory data. qP-wave anisotropy is weak for small propagation angles ( 0 30 about θ ). qSV-wave anisotropy is strong in moderate propagation angles ( 0 0 0 7 about 20 about < < θ ).
openaire +2 more sources
Firn seismic anisotropy in the Northeast Greenland Ice Stream from ambient-noise surface waves [PDF]
The CryosphereWe analyse ambient-noise seismic data from 23 three-component seismic nodes to study firn velocity structure and seismic anisotropy near the EastGRIP camp along the Northeast Greenland Ice Stream (NEGIS).
E. Pearce +9 more
doaj +1 more source
Representing anisotropic subduction zones with isotropic velocity models: A characterization of the problem and some steps on a possible path forward [PDF]
, 2016 Despite the widely known fact that mantle flow in and around subduction zones produces the development of considerable seismic anisotropy, most P-wave tomography efforts still rely on the assumption of isotropy.
Bezada, M. J +2 more
core +1 more source
Seismic anisotropy at Hydrate Ridge [PDF]
Geophysical Research Letters, 2006 P‐wave velocity increases in the presence of gas hydrates and decreases in the presence of free gas in the sediments, making it an excellent means to investigate gas hydrate systems. However, seismic velocity is typically derived from surface seismic data without consideration of seismic anisotropy.
Dhananjay Kumar +4 more
openaire +1 more source
Lateral variations in the crustal structure of the Indo-Eurasian collision zone [PDF]
, 2018 We thank Michael Ritzwoller and two anonymous reviewers for constructive comments that have helped improve the manuscript. The majority of the seismic data used in this study were downloaded from IRIS DMC.
Gilligan, Amy, Priestley, Keith
core +1 more source
Influence of Error in Estimating Anisotropy Parameters on VTI Depth Imaging
International Journal of Geophysics, 2016 Thin layers in sedimentary rocks lead to seismic anisotropy which makes the wave velocity dependent on the propagation angle. This aspect causes errors in seismic imaging such as mispositioning of migrated events if anisotropy is not accounted for.
S. Y. Moussavi Alashloo +3 more
doaj +1 more source
Sharp Changes of Crustal Seismic Anisotropy Across the Central Tanlu Fault Zone in East China
Geophysical Research Letters, 2023 Both seismic and geodetic data suggested that the ∼120‐km long Weifang segment of the Tanlu fault zone, a large‐scale active strike‐slip system at east China, is a seismic gap with no obvious along‐strike shear motion at surface.
Wenpei Miao, Fenglin Niu, Haichao Chen
doaj +1 more source
Automatic Reconstruction of Fault Networks from Seismicity Catalogs: 3D Optimal Anisotropic Dynamic Clustering [PDF]
, 2007 We propose a new pattern recognition method that is able to reconstruct the 3D structure of the active part of a fault network using the spatial location of earthquakes.
Bhattacharya +36 more
core +3 more sources