Results 11 to 20 of about 48,699 (196)
Shear-Wave Splitting Analysis Using Optimization Algorithms
Lithosphere, 2022 Shear-wave splitting (SWS) analysis is used to predict fractures in subsurface media. Specifically, two parameters relevant to SWS analysis (the azimuth of the fast shear wave and the time delay between the fast and slow shear waves) are used to quantify
Zhengtao He, Yuyong Yang, Huailai Zhou
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Effects of Background Porosity on Seismic Anisotropy in Fractured Rocks: An Experimental Study
Applied Sciences, 2023 Fractures are widely distributed in the subsurface and are crucial for hydrocarbon, CCS, offshore infrastructure (windfarms), and geothermal seismic surveys.
Yuangui Zhang +3 more
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Geochemistry, Geophysics, Geosystems, 2021 Shear‐wave splitting observations can provide insight into mantle flow, due to the link between the deformation of mantle rocks and their direction‐dependent seismic wave velocities.
Cole Richards +3 more
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Anisotropic structure of the Australian continent
Frontiers in Earth Science, 2023 The Australian continent preserves some of the oldest lithosphere on Earth in the Yilgarn, Pilbara, and Gawler Cratons. In this study we present shear wave splitting and Ps receiver function results at long running stations across the continent.
Andrew Birkey +2 more
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Seismic anisotropy of the upper mantle beneath Thailand: Tectonic setting constrained by shear-wave splitting analysis [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2020 The tectonic setting of the lithosphere and upper mantle underneath Thailand varies and changes substantially over short distances. We have mapped these variations using shear wave splitting (SWS) analysis.
Wisawet Wongwai +3 more
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Wave-equation shear wave splitting tomography [PDF]
Geophysical Journal International, 2008 The main focus of this paper is the development of a theoretical framework for the tomographic inversion of (broad-band) shear wave splitting measurements in terms of anisotropic structure in the upper mantle. We show that the partial differential equations (PDEs) that govern wave equation shearwave splitting tomography are, upon linearization with ...
Long, M.L. +2 more
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Communications Earth & Environment, 2021 Daily variations in seismic S-wave anisotropy reveal the dynamic response of englacial fractures to changing meltwater supply, according to shear wave splitting measurements from a seismometer network on the Rhonegletscher, Switzerland.
Wojciech Gajek +4 more
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Automated shear-wave splitting analysis for single- and multi- layer anisotropic media
Seismica, 2023 Shear-wave velocity anisotropy is present throughout the earth. The strength and orientation of anisotropy can be observed by shear-wave splitting (birefringence) accumulated between earthquake sources and receivers. Seismic deployments are getting ever
Thomas Samuel Hudson +2 more
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Shear‐wave splitting beneath the Galápagos archipelago [PDF]
Geophysical Research Letters, 2005 Shear‐wave splitting measurements in the Galápagos archipelago show a rapid change from consistently oriented anisotropy to no measurable anisotropy. At the western edge of the archipelago delay times are 0.4–0.9 s and fast polarization directions are 81–109°E. These directions are consistent with anisotropy resulting from shear of the asthenosphere by
Fontaine, Fabrice R. +5 more
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High temperature elastic anisotropy of the perovskite and post-perovskite polymorphs of Al2O3 [PDF]
, 2005 Finite temperature ab initio molecular dynamics calculations were performed to determine the high temperature elastic and seismic properties of the perovskite and post-perovskite phases of pure end-member Al2O3.
Brodholt, JP, Price, GD, Stackhouse, S
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