Tectonic environment and cause of earthquakes in the Three Gorges reservoir area

被引：0
|
作者：
Li Qiang [1 ]
Zhao Xu [2 ]
Cai Jin'an [3 ]
Liu Ruifeng [2 ]
Zhao Cuiping [3 ]
机构：
[1] China Earthquake Adm, Natl Earthquake lnfrastruct Serv, Beijing 100036, Peoples R China
[2] China Earthquake Adm, China Earthquake Network Ctr, Beijing 100036, Peoples R China
[3] China Earthquake Adm, Inst Earthquake Sci, Beijing 100036, Peoples R China
来源：
GEODESY AND GEODYNAMICS | 2011年 / 2卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Three Gorges reservoir area; tectonic environment; impoundment; earthquake cause; buried fault;
D O I：
暂无
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Seismotectonics in the Three Gorges reservoir area is investigated by using the P-wave tomography with earthquakes that occurred before the impoundment of the reservoir. The result indicates that most of these events occurred in or around the velocity-gradient belts between high-velocity and low-velocity anomalies. These belts have similar characteristics to buried-fault zones. Stresses genemted by movement of partially molten upper-mantle materials and thermal stress may have jointly contributed to the seismic activities along the faults and such buried faults, and possibly activated new earthquake ruptures.
引用
收藏
页码：13 / 20
页数：8
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