Zhejiang Tectonic Stress Field Determinated from Seismic P-Wave Polarity Data
详细信息
- 责任者：Chen Xin (Earthquake Administration of Guangxi ; Nanning 530022 ; China) ; Yu Xueqing
- 刊名：North China Earthquake Sciences
- 出版年：2012
- 卷期：30(4)
- 关键词：构造应力场 ; tectonic stress field ; 纵波 ; P-waves ; 浙江 ; Zhejiang Province
- 页码：p.25-28
- 图表：1 illus., 1 table, 28 refs.
- 分类号：0300
- issnNo：ISSN1003-1375
- isbnNo：CN13-1102/P
摘要
On the basis of 168 P-wave first-motion polarities of 44 earthquakes occurred in Zhejiang Province and its adjacent areas from 1998 to 2002, the crustal stress field in the area is determined using the grid test method. The results show that the azimuth angle and dip angle of the average P-axis of crustal stress field is 248° and 3°, and the azimuth angle and dip angle of the T-axis of crustal stress field is 338° and 6°. The crustal stress field direction determined in this study is relatively consistent with that used less information by predecessors,but the study used a large number of P-wave first motion polarities data to constrain the crustal stress field,and therefore is more credible.
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