SKS Wave Splitting in East China
详细信息
- 责任者：Shi Yuyan (Earthquake Administration of Shandong Province ; Jinan 250014 ; China) ; Zheng Sihua
- 刊名：Earthquake
- 出版年：2012
- 卷期：32(4)
- 关键词：地震波记录曲线 ; seismograms ; 上地幔 ; upper mantle ; 华东地区 ; East China
- 页码：p.33-43
- 图表：5 illus., 1 table, 20 refs.
- 分类号：0400
- issnNo：ISSN1000-3274
- isbnNo：CN11-1893/P
摘要
SKS wave splitting measurement is a powerful tool to characterize seismic anisotropy. The authors made measurements of SKS wave splitting beneath the east China mainland and use the technique of minimum energy to determine SKS wave splitting parameters at 157 three-component broadband regional digital stations in East China regions. The results indicate that fast-wave polarization direction for anisotropy is basically in the NW-SE direction in east China and nearly E-W direction in the south, which gradually rotates and is the same with the absolute plate movement direction. The anisotropy is mainly caused by the upper mantle and rarely occasioned by the crust and the sediments.In the study area, the substance movement pattern between the shallow and deep is basically the same and the deformation model of the crust and the mantle possibly experiences vertically coherent deformation.
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