Results 21 to 30 of about 48,466 (293)

Shear‐wave splitting observations across southwest Ireland [PDF]

open access: yesGeophysical Research Letters, 2006
Shear‐wave splitting analyses have been carried out on teleseismic data from the southwest of Ireland acquired during the Irish Seismological Lithospheric Experiment (ISLE). The data were gathered over a ten‐month period by a temporary network of 23 broadband and short‐period stations.
Do, V.   +3 more
openaire   +3 more sources

Teleseismic shear wave splitting measurements in noisyenvironments [PDF]

open access: yesGeophysical Journal International, 1999
SUMMARY High noise levels hamper teleseismic shear wave splitting measurements, which bandpass filtering does not always help. To investigate how robust splitting measurements are to noise, we analysed a set of synthetic records with known splitting parameters and added fixed levels of noise.
Restivo, A, Helffrich, GR
openaire   +3 more sources

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

open access: yes, 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   +3 more
core   +1 more source

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

open access: yesJournal 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   +2 more
doaj   +1 more source

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

open access: yes, 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   +2 more
core   +1 more source

Mid-mantle deformation inferred from seismic anisotropy [PDF]

open access: yes, 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   +34 more
core   +4 more sources

High temperature elastic anisotropy of the perovskite and post-perovskite polymorphs of Al2O3 [PDF]

open access: yes, 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

Identifying global seismic anisotropy patterns by correlating shear-wave splitting and surface-wave data [PDF]

open access: yes, 2009
International audienceWe compare a global compilation of shear-wave splitting measurements with azimuthal seismic anisotropy parameters inferred from surface-wave tomography.
Barruol, Guilhem   +3 more
core   +6 more sources

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

open access: yesGeodesy 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   +3 more
doaj   +1 more source

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

open access: yesEarthquake 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

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