Research on Average Wave Velocity Ration of Segmentation in Yishu Fault and Its Adjacent Area
详细信息
- 责任者：Li Xia (Earthquake Administration of Shandong Province ; Jinan 250014 ; China) ; Zhou Yanwen
- 刊名：Journal of Seismological Research
- 出版年：2013
- 卷期：36(2)
- 关键词：弹性波 ; elastic waves ; 速度分析 ; velocity analysis ; 沂沭断裂带 ; Yishu Fault Zone
- 页码：p.148-154
- 图表：illus., 21 refs.
- 分类号：0500
- issnNo：ISSN1000-0666
- isbnNo：CN53-1062/P
摘要
Basing on the observation report of Shandong Provinc Digital Seismic Network from Jan. ,2002 to Apr. , 2012,we calculated the average wave velocity ration and compared temporal and spatial distribution characteristics in Yishu fault zone and its adjacent areas which was divided into 4 sub-region according to multi-station method. The results show that: (1) Average wave velocity ratio of the Tancheng-Gaoqiao and Laizhou bay and their adjacent sea area are slightly lower than those of Mengtong-Weifang and Xinyi-Suqian. The velocity ratio values in Yishu main fault are between 1. 69 and 1. 73. However it is significantly lower in the northern part of Jiaodong peninsula,and the minimum value is 1.65. (2) The focal depth of moderate and small earthquakes in study area have no obvious dependence with the velocity ratio,and the advantage distribution range of focal depth is from 5km to 20 km,which reflects there is lateral heterogeneity in the middle and upper crust. (3) In the velocity ratio calculation,the more of the number of stations,the smaller of the calculation error of wave ve-locity ratio,and the suitable division of the space range could more realistically reflect the changes of the media.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |