首页|期刊导航|中国地震研究：英文版|Simultaneous Inversion of Earthquake Relocation and Velocity Structure in the Shanxi- reservoir, Wenzhou
中国地震研究：英文版2011，Vol.25Issue(4)：468-476,9.
Simultaneous Inversion of Earthquake Relocation and Velocity Structure in the Shanxi- reservoir, Wenzhou
Simultaneous Inversion of Earthquake Relocation and Velocity Structure in the Shanxi- reservoir, Wenzhou
摘要
Abstract
Using the data of P-wave network and Zhejiang and travel time recorded at the Shanxi-reservoir seismological Fujian local networks, we implemented a simultaneous inversion of earthquake relocation and velocity structure and determined the new locations of earthquakes in the Shanxi-reservoir. The results show that： （1） the overall epicenter distribution is NW directed, and the Shanxi reservoir induced seismicity has a close relationship to the Shuangxi-Jiaoxiyang fault; （2） the focal depth of the Shanxi reservoir induced seismicity is 5.4km in average, less than the average focal depth in the South China earthquake zone; （3） the focal depth is shallower on the reservoir shore and deeper in the reservoir inundation area. At the beginning of the reservoir induced seismicity, the focal depth increased gradually. This may be due to the gradual penetration of water into a larger depth that induced deeper earthquakes; and （4） there is a low P-wave velocity anomaly in the study area, located at the intersection of multiple faults in the reservoir inundation area. The Shanxi reservoir induced seismicity mostly occurred in this lowvelocity anomaly zone. This may be related to water penetration.关键词
水库地震/地震定位/速度结构/同时反演/山西/水库诱发地震/水库淹没区/震源深度Key words
Shanxi reservoir/Velocity structure/Simultaneous inversion/Earthquake location分类
天文与地球科学引用本文复制引用
Zhong Yuyun,Zhang Zhenfeng,Kan Baoxiang..Simultaneous Inversion of Earthquake Relocation and Velocity Structure in the Shanxi- reservoir, Wenzhou[J].中国地震研究：英文版,2011,25(4):468-476,9.基金项目
This project was supported by the National Key Technology R＆D Program (2008BAC38B03-01-05) and the Earthquake Scientific Research Project (200708020), China. （2008BAC38B03-01-05）
