Shear Wave Splitting in the Crust in the Intersection Zone of he Zhangjiakou-Bohai Seismic Belt and Shanxi Seismic Belt

详细信息   

• 责任者：Zhao Bo (Institute of Earthquake Science China Earthquake Administration ; Beijing ; 100036 ; China) ; Gao Yuan
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(6)
• 关键词：地震 ; earthquakes
• 页码：p.1517-1527
• 图表：7 illus., 1 table, 41 refs.
• 分类号：0500
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

Using seismic records from temporary seismic stations in the west of Zhangjiakou-Bohai seismic belt and regional seismic stations in Huabei, this paper analyzes the parameters of anisotropic characteristics by the systemic analysis method of shear-waves splitting. The results demonstrate that the polarization directions of fast shear-waves are nearly EW in the north of the studied zone of Yanshan uplift; and are consistent with the direction of the regional principal compressive stress. The polarization directions of fast shear-waves in the middle of studied zone are more complicated where is at the boundary between the uplift and the subsidence. This feature probably is caused by the complex geologic structure.