Results 21 to 30 of about 48,699 (196)

Stress-dependent shear wave splitting and permeability in fractured porous rock

Journal of Rock Mechanics and Geotechnical Engineering, 2019
It is well known that shear wave propagates slower across than parallel to a fracture, and as a result, a travelling shear wave splits into two directions when it encounters a fracture.
Daisuke Katsuki, Marte Gutierrez, Abdulhadi Almrabat   +2 more
doaj   +1 more source

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

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

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

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

Apparent Splitting of S Waves Propagating Through an Isotropic Lowermost Mantle [PDF]

, 2018
Observations of shear wave anisotropy are key for understanding the mineralogical structure and flow in the mantle. Several researchers have reported the presence of seismic anisotropy in the lowermost 150–250 km of the mantle (i.e., D urn:x-wiley:jgrb ...
Ferreira, Ana M. G., Parisi, Laura, Ritsema, Jeroen   +2 more
core   +3 more sources

Upper crustal anisotropy from local shear-wave splitting and crust-mantle coupling of Yunnan, SE margin of Tibetan Plateau

Geodesy and Geodynamics, 2018
The upper crustal anisotropy of Yunnan area, SE margin of Tibetan Plateau, is investigated by measuring the shear wave splitting of local earthquakes.
Bo Zhang, Shuangxi Zhang, Tengfei Wu, Yujin Hua   +3 more
doaj   +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

The formation of Laurentia : Evidence from shear wave splitting [PDF]

, 2017
The authors would like to thank A. Walker for invaluable help understanding the MSAT forward modelling code, as well as A. Boyce, L. Petrescu, and C.
Bastow, Ian, Darbyshire, Fiona, Gilligan, Amy, Liddell, Mitch V, Pugh, Steven   +4 more
core   +2 more sources

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