地壳剪切波分裂研究及地震定位误差对剪切波分裂分析的影响

Abstract

Abstract: Seismic anisotropy of the crust is mainly caused by the stress-aligned fluid-saturated grain-boundary cracks. When shear-wave travels through anisotropic media, it will split. The parameter of shear-wave splitting is relative to the physical property of the crust medium and the regional stress field. Earthquake location error has an impact on share-wave splitting parameter. We discuss factors that influence on the accurate location and analyses the variety of the time delay caused by depth location error. We compared the influences of different depth errors on normalized time delays. The result of quantitative analysis shows that depth error can cause a great influence on slow shear-wave time delay. We also introduce and compare some analysis methods of shear-wave splitting.

Key words: Shear-wave splitting, Earthquake location, Crustal anisotropy, Polarization of fast shear-wave, Time delay

CLC Number:

P315.7

ZHAO Bo, GAO Yuan. Crustal Share-wave Splitting Research and the Effects of Earthquake Location Error on the Analyzing Results[J]. EARTHQUAKE, 2010, 30(1): 115-124.

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Crustal Share-wave Splitting Research and the Effects of Earthquake Location Error on the Analyzing Results

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