研究现今地壳运动和强震机理的一种方法  

A method of analyzing the present crustal movement and the mechanism of strong shocks

作　　者：申重阳[1] 李辉[1] 

机构地区：[1]中国地震局地震研究所

出　　处：《地球物理学进展》2007年第1期49-56,共8页Progress in Geophysics

基　　金：地震科学联合基金项目(101005);国家自然科学基金(40574012)资助

摘　　要：本文阐述了地壳形变与密度变化耦合运动的基本理论,分析了地壳形变与密度变化耦合运动引起的重力时间变化.断层位错运动是地壳形变与密度变化耦合运动的特殊形式.利用重复重力观测数据,选用稳健算法反演研究了1985-2002年滇西地震实验场主要断裂运动的时间分布和强震响应特征,获得了不同类型强震孕育过程图像.We have discussed the basic theory of coupling movement between the crustal deformation and density change, and studied the gravity change with time raised by this coupling movement. The fault dislocation and movement is a special form of the coupling movement between the crustal deformation and density change. Using the repeat gravity date from the western Yunnan Earthquake Prediction, we have inverted the slip distribution of the main active faults with time from 1985 to 2002 based on the robust algorithm, and studied the response characteristic of strong shock, and obtained the picture of the strong shock preparation process with different type.

关 键 词：地壳形变 密度变化 耦合运动 断裂运动 强震孕育 

分 类 号：P315[天文地球—地震学]