Results 171 to 180 of about 3,062 (210)

Study on radial fracture mechanism of saturated granite subjected to coupled static-cyclic impact loading: An experimental investigation. [PDF]

PLoS One
Wang Y, Liu X, Xu Z, Tang H.
europepmc   +1 more source

First-principles insights into half-metallic ferromagnetism, lattice dynamics, and thermoelectric performance of MgX₂Se₄ (X=Ti, Mn) spinel chalcogenides. [PDF]

RSC Adv
Ramzan A, Sofi MY, Khan MS, Khan MA.
europepmc   +1 more source

Influence of seismic strain stress on evolution law of microcracks in concrete TPB tests using AE technology. [PDF]

Sci Rep
Xiao D, Wen L, Cao Y, Chen S, Dou Y, Tang L.   +5 more
europepmc   +1 more source

Study on the mechanical behavior and fracturing mechanism of rock containing two unparallel prefabricated fissures under uniaxial loading. [PDF]

PLoS One
Li J, Wei Y, Wang T.
europepmc   +1 more source

Physicochemical characteristics and mechanism analysis of loess at different high-temperature stages. [PDF]

Sci Rep
Bai H, Yin W, Li X, Qiao J, Tian C, Wang Y.   +5 more
europepmc   +1 more source

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Shear-wave splitting measurements — Problems and solutions

Tectonophysics, 2008
Abstract We compare sensitivity and reliability of three basic techniques of shear-wave splitting analysis – cross-correlation of wave components, minimization of covariance matrix eigenvalues and minimizing energy on the transverse component – of both synthetic and real data, point out some problems and propose solutions.
Luděk Vecsey, Jaroslava Plomerová, Vladislav Babuška   +2 more
openaire   +3 more sources

Thin layers and shear-wave splitting

Geophysics, 1991
Abstract The near-surface weathering layer is considered by many to be strongly anisotropic. Any shear-wave signal passing through this low-velocity layer will inherit, to some degree, the anisotropic response of this layer. For thin weathering layers, information about previous anisotropic events may be distorted; when the thickness ...
R. D. Slack, D. A. Ebrom, J. A. McDonald, R. H. Tatham   +3 more
openaire   +1 more source

Null Detection in Shear-Wave Splitting Measurements

Bulletin of the Seismological Society of America, 2007
Shear-wave splitting measurements are widely used to analyze orien- tations of anisotropy. We compare two different shear-wave splitting techniques, which are generally assumed to give similar results. Using a synthetic test, which covers the whole backazimuthal range, we find characteristic differences, however, in fast-axis and delay-time estimates ...
Wüstefeld, A, Bokelmann, G
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A New Understanding of Shear-Wave Splitting

Proceedings, 1995
Shear-wave splitting (shear-wave- bi-refringence) diagnostic of some form of azimuthal anisotropy is widely observed in all types of rock in the uppermost 15km of the Earth's crust (Crampin and Lovell 1991).
S. Crampin, S. V. Zatsepin
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Shear Wave Splitting in Himalaya

Chinese Journal of Geophysics, 2007
AbstractWe analyze the records of 56 stations in Himalaya area with the method of minimizing the eigenvalue. Splitting was observed at thirty‐nine stations of them. The average splitting time is about 0.8s. The parameters of splitting vary not only from south to north, but are also different on the two sides of the line joining the station GAIG and ...
openaire   +1 more source