摘要
根据Airy-Hesikannen均衡假说,以CRUST2.0模型提供的密度和Moho面深度作为计算参数,计算得到青藏高原的均衡重力异常,并结合地震资料从均衡的角度对青藏高原的地震构造动力学进行了解释。研究表明,强震往往发生在均衡重力异常梯度带等值线的斜坡带、陡变带以及拐弯区上,说明地壳构造与地震的发生有一定的关系。
On the basis of the Airy-Hesikannen equilibrium hal-Tibet plateau are calculated taking the density and the depth parameters, and then the seismo-tectonic dynamics is studied by hypothesis, the isostatic gravity anomalies of Qing- of upper lithosphere from the CRUST2.0 model as use of the seismic data from the point of equilibrium. It shows that strong earthquakes occur often in the inflexion of gradient belt of isostatic gravity anomalies, and generally, the occurrence of earthquake is correlated to crust tectonics.
出处
《大地测量与地球动力学》
CSCD
北大核心
2007年第6期33-36,50,共5页
Journal of Geodesy and Geodynamics
基金
中国地震局地震研究所科技发展基金(2012150)
中国地震局地震研究所所长基金(IS200736026)
关键词
地震
青藏高原
均衡重力异常
CRUST2.0模型
构造运动
earthquake, Qinghai-Tibet plateau, isostatic gravity anomaly, CRUST2.0 model, tectonic movement
