Results 31 to 40 of about 164,377 (321)

Finite-frequency sensitivity of body waves to anisotropy based upon adjoint methods [PDF]

, 2007
We investigate the sensitivity of finite-frequency body-wave observables to mantle anisotropy based upon kernels calculated by combining adjoint methods and spectral-element modelling of seismic wave propagation.
Liu, Qinya, Sieminski, Anne, Trampert, Jeannot, Tromp, Jeroen   +3 more
core   +1 more source

Wave speeds and Green’s tensors for shear wave propagation in incompressible, hyperelastic materials with uniaxial stretch [PDF]

, 2019
Assessing elastic material properties from shear wave propagation following an acoustic radiation force impulse (ARFI) excitation is difficult in anisotropic materials because of the complex relations among the propagation direction, shear wave ...
Caenen, Annette, Nightingale, Kathryn R., Rouze, Ned C.   +2 more
core   +1 more source

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
core   +1 more source

Insight into NE Tibetan Plateau expansion from crustal and upper mantle anisotropy revealed by shear-wave splitting

Earth and Planetary Science Letters, 2017
Zhouchuan Huang, F. Tilmann, Mingjie Xu, Liangshu Wang, Z. Ding, N. Mi, Dayong Yu, Hua Li   +7 more
semanticscholar   +3 more sources

Mid-mantle deformation inferred from seismic anisotropy [PDF]

, 2002
With time, convective processes in the Earth's mantle will tend to align crystals, grains and inclusions. This mantle fabric is detectable seismologically, as it produces an anisotropy in material properties—in particular, a directional dependence in ...
A Yeganeh-Haeri, AE Ringwood, AR Oganov, C Tong, CJ Wolfe, CP Meade, D Mainprice, DL Anderson, G Barruol, G Clitheroe, Guilhem Barruol, J-M Kendall, J-M Kendall, J-P Montagner, J-P Montagner, J.-Michael Kendall, James Wookey, JB Gaherty, JX Mitrovica, K Fischer, K Hirose, L Stixrude, LP Vinnik, LP Vinnik, MJ Fouch, MK Savage, NJ Kusznir, PG Silver, PG Silver, R Van der Hilst, S Karato, S Karato, S Widiyantoro, S Özalaybey, SH Kirby   +34 more
core   +4 more sources

Comment on “SKS splitting beneath continental rifts zones” by Gao et al. [PDF]

, 1999
International audienceAs previously suggested by many authors, shear wave splitting rneasurernents certainly provide the best insights on the tectonic structure (or fabric) of the upper mantle.
Achauer, Adolphe Nicolas, Alain Vauchez, Avé-Lallemant, Babuska, Barruol, Barruol, Boudier, Boudier, Chopra, Gao, Guilhem Barruol, Hearn, Ji, Kern, Mainprice, Mainprice, Mercier, Montagner, Nicolas, Nicolas, Nicolas, Nicolas, Nicolas, Shackleton, Silver, Silver, Smith, Sénéchal, Ufimtsev, Vauchez, Vauchez, Vauchez, Vinnik, Zhang   +34 more
core   +2 more sources

A potential post-perovskite province in D″ beneath the Eastern Pacific: evidence from new analysis of discrepant SKS–SKKS shear-wave splitting

, 2020
Observations of seismic anisotropy in the lowermost mantle—D″—are abundant. As seismic anisotropy is known to develop as a response to plastic flow in the mantle, constraining lowermost mantle anisotropy allows us to better understand mantle dynamics ...
J. Asplet, J. Wookey, M. Kendall
semanticscholar   +1 more source

Seismic anisotropy beneath the Chinese Mainland: Constraints from shear wave splitting analyses

Earthquake Research Advances, 2021
We use earthquakes recorded by the China National Seismic Network from 2015 to 2019 and measure shear wave splitting parameters of SKS to study the anisotropic characteristics beneath the mainland of China.
Lingxia Gao, Daoyuan Sun
doaj   +1 more source

Seismic Anisotropy and Mantle Flow in the Sumatra Subduction Zone Constrained by Shear Wave Splitting and Receiver Function Analyses

Geochemistry Geophysics Geosystems, 2020
To systematically investigate seismic azimuthal anisotropy in the Sumatra subduction zone and probe mantle dynamics associated with the subduction of the Australian Plate beneath the Sunda Plate, a total of 169 pairs of teleseismic XKS (including PKS ...
F. Kong, Stephen S. Gao, Kelly H. Liu, Jie Zhang, Jiabiao Li   +4 more
semanticscholar   +1 more source

Deriving micro- to macro-scale seismic velocities from ice-core c axis orientations [PDF]

The Cryosphere, 2018
One of the great challenges in glaciology is the ability to estimate the bulk ice anisotropy in ice sheets and glaciers, which is needed to improve our understanding of ice-sheet dynamics.
J. Kerch, J. Kerch, A. Diez, I. Weikusat, I. Weikusat, O. Eisen, O. Eisen   +6 more
doaj   +1 more source