首页|Preliminary study on variation characteristics of ocean tide dynamic stress in crust and its relationship with earthquakes
Preliminary study on variation characteristics of ocean tide dynamic stress in crust and its relationship with earthquakes
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国家科技期刊平台
NETL
NSTL
万方数据
维普
The variation characteristics of dynamic stress in crustal blocks and its relationship with earthquakes are comprehensively studied by analyzing geophysical data and calculating the dynamic response of crustal blocks in North China to the tide level change of Bohai Sea and Yellow Sea using a 3D nonlinear dynamic finite element simulation. This study has noticed some new features of crustal dynamic stress: (a) High stress level appears at the place where the stress waves superpose and interference during the process of propagation, and the enhancement of dynamic shear stress is more significant as compared with that of compressive stress; (b) Variation of dynamic stress has influence on seismogenic environment and hence earthquake occurrence; (c) As viewed from the variation characteristics of crustal dynamic stress, the superimposing process of shear stress manifests the preparation process of earthquakes.
finite element simulationtidedynamic stressearthquake
LU Ming-yong、ZHENG Wen-heng
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China Center for Earthquake Disaster Emergency and SAR, Beijing 100049, China
Huazhong University of Science and Technology, Wuhan 430074, China