收稿日期: 2014-12-18
修回日期: 2015-03-31
网络出版日期: 2015-11-15
基金资助
中国科学院重点部署项目(KZZD-EW-TZ-15-3)资助
Analysis of complex seismic anisotropy in Yunnan region
Received date: 2014-12-18
Revised date: 2015-03-31
Online published: 2015-11-15
盛敏汉 , 张怀 , 周元泽 , 石耀霖 . 云南地区复杂地震各向异性分析[J]. 中国科学院大学学报, 2015 , 32(6) : 775 -782 . DOI: 10.7523/j.issn.2095-6134.2015.06.008
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
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