Results 241 to 250 of about 2,203,308 (287)

First-principles investigation of Be₃PX₃ (X = F, Cl, Br) halide anti-perovskites: structural stability, optoelectronic properties, and theoretical photocatalytic screening. [PDF]

RSC Adv
Mia MH, Akter K, Arunkumar A, AlFaify S, Ashraf Munna MA, Hasan MZ.   +5 more
europepmc   +1 more source

Shear-wave splitting in compliant rocks

The Leading Edge, 2010
Shear-wave splitting is a phenomenon that has received a lot of attention primarily because of its connection with vertically aligned cracks or fractures within reservoirs. However, in most cases the largest amount of shear-wave splitting is observed to occur in the near-surface layers where the rocks are the least consolidated, and so are least likely
Peter Cary, Xinxiang Li, Gulia Popov, Changjun Zhang   +3 more
openaire   +2 more sources

Splitting parameter yield (SPY): A program for semiautomatic analysis of shear-wave splitting

Computers & Geosciences, 2012
SPY is a Matlab algorithm that analyzes seismic waveforms in a semiautomatic way, providing estimates of the two observables of the anisotropy: the shear-wave splitting parameters. We chose to exploit those computational processes that require less intervention by the user, gaining objectivity and reliability as a result.
Lucia Zaccarelli, Francesca Bianco, Riccardo Zaccarelli   +2 more
openaire   +3 more sources

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
openaire   +3 more sources

Some of the next articles are maybe not open access.

Related searches:

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
exaly   +2 more sources

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
openaire   +1 more source

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

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

Bootstrapping shear-wave splitting errors

Bulletin of the Seismological Society of America, 1994
Abstract We have developed a bootstrap method to estimate errors associated with inverting SKS waveforms for shear-wave splitting parameters. Although presented for shear-wave splitting inversions, this method is suitable for any waveform inversion procedure.
Eric Sandvol, Thomas Hearn
openaire   +1 more source

SWAS: A Shear-Wave Analysis System for Semi-Automatic Measurement of Shear-Wave Splitting Above Small Earthquakes

Physics of the Earth and Planetary Interiors, 2006
The complexity of shear wave-arrivals above small earthquakes makes the polarisations and time-delays of shear-wave splitting above small earthquakes difficult to measure.
Yuan Gao, Stuart Crampin
exaly   +2 more sources