Analysis of complex seismic anisotropy in Yunnan region

doi:10.7523/j.issn.2095-6134.2015.06.008

Abstract

Abstract:

The deformation information of crust and upper mantle can be obtained from seismic anisotropy. SKS wave has good transverse resolution because of its almost vertical incidence. We collected a mass of seismic data in Yunnan region and calculated and analyzed the result of SKS wave splitting. Complex anisotropy and an obvious difference between south and north parts were found in this region. Then two-layer anisotropy model was used to analyze the data at KMI station, and a possible two-layer result which fits the observation data well was obtained. The splitting parameters are 130° and 0.2 s for the upper layer and 90° and 0.9 s for the lower layer.

Key words: SKS, Yunnan region, two-layer anisotropy model

CLC Number:

P315.3

SHENG Minhan, ZHANG Huai, ZHOU Yuanze, SHI Yaolin. Analysis of complex seismic anisotropy in Yunnan region[J]. , 2015, 32(6): 775-782.

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