Three-dimensional shear-wave splitting tomography in the Parkfield, California, region

2007 ◽  
Vol 34 (24) ◽  
Author(s):  
Haijiang Zhang ◽  
Yunfeng Liu ◽  
Clifford Thurber ◽  
Steven Roecker
Keyword(s):  
Shear Wave ◽  
Three Dimensional ◽  
Shear Wave Splitting ◽  
Wave Splitting

scholarly journals Shear Wave Splitting and Polarization in Anisotropic Fluid-Infiltrating Porous Media: A Numerical Study

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4988
Author(s):  
Nico De Marchi ◽  
WaiChing Sun ◽  
Valentina Salomoni
Keyword(s):  
Porous Media ◽  
Shear Wave ◽  
Numerical Study ◽  
Time Integration ◽  
Three Dimensional ◽  
Mixed Finite Elements ◽  
Shear Wave Splitting ◽  
Anisotropic Fluid ◽  
Structural Anisotropy ◽  
Wave Splitting

The triggering and spreading of volumetric waves in soils, namely pressure (P) and shear (S) waves, developing from a point source of a dynamic load, are analyzed. Wave polarization and shear wave splitting are innovatively reproduced via a three-dimensional Finite Element research code upgraded to account for fast dynamic regimes in fully saturated porous media. The mathematical–numerical model adopts a u-v-p formulation enhanced by introducing Taylor–Hood mixed finite elements and the stability features of the solution are considered by analyzing different implemented time integration strategies. Particularly, the phenomena have been studied and reconstructed by numerically generating different types of medium anisotropy accounting for (i) an anisotropic solid skeleton, (ii) an anisotropic permeability tensor, and (iii) a Biot’s effective stress coefficient tensor. Additionally, deviatoric-volumetric coupling effects have been emphasized by specifically modifying the structural anisotropy. A series of analyses are conducted to validate the model and prove the effectiveness of the results, from the directionality of polarized vibrations, the anisotropy-induced splitting, up to the spreading of surface waves.

scholarly journals The influence of plate motions on three-dimensional back arc mantle flow and shear wave splitting

2000 ◽  
Vol 105 (B12) ◽  
pp. 28009-28033 ◽  
Author(s):  
Chad E. Hall ◽  
Karen M. Fischer ◽  
E. M. Parmentier ◽  
Donna K. Blackman
Keyword(s):  
Shear Wave ◽  
Three Dimensional ◽  
Shear Wave Splitting ◽  
Mantle Flow ◽  
Plate Motions ◽  
Wave Splitting ◽  
Back Arc

scholarly journals Shear wave splitting in three-dimensional anisotropic media

2004 ◽  
Vol 159 (2) ◽  
pp. 711-720 ◽  
Author(s):  
Sébastien Chevrot ◽  
Noémie Favier ◽  
Dimitri Komatitsch
Keyword(s):  
Shear Wave ◽  
Three Dimensional ◽  
Anisotropic Media ◽  
Shear Wave Splitting ◽  
Wave Splitting

Analysis of shear wave splitting anisotropy in the Tres Virgenes Volcanic Complex, Baja California Sur, Mexico

Geothermics ◽  
2021 ◽  
Vol 94 ◽  
pp. 102115
Author(s):  
F. Chacón-Hernández ◽  
F.R. Zúñiga ◽  
J.O. Campos-Enríquez ◽  
J. Lermo-Samaniego ◽  
N. Jiménez-Méndez
Keyword(s):  
Shear Wave ◽  
Baja California ◽  
Shear Wave Splitting ◽  
Volcanic Complex ◽  
Baja California Sur ◽  
Wave Splitting
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