试论我国大陆板内强震活动与地球动力学过程的关系

A STUDY OF THE RELATION BETWEEN ACTIVITIES OF STRONG EARTHQUAKES AND GEODYNAMIC PROCESSES IN THE CONTINENT OF CHINA

摘要:

本文根据"由浅入深"、"由静到动"的研究方法,分析了我国大陆的地球物理、地球化学以及地质发展历史的实际资料,把地震活动与深部物性活动联系起来,提出了M≥6级地震在空间上的活动范围受岩石圈厚度控制;断层只在一定岩石圈厚度范围内对强震震中的位置起控制作用。由于软流层的物质活动与相邻板块活动的历史有关以及对流单体活动区随时间的变化,因此地震活动也将发生变化。
地震是地质作用的结果,强地震的活动也是地球内部物质活动的表现。研究地震活动与地球动力学的关系,是一个非常重要的课题。

Abstract:

Based on the method "from static to motion" and "from surface to dep-th",this paper analyses the geophysical,geochemical,geological and hist-orical material in the continent of China.Seismicity is connected with motions in the depth of eareh.It is suggested that active regions of strong earthquakes M≥6 are under the control of lithosphere thickness;the fault only occurred at the some thickness of lithosphere controls the position of epicentre.As the material activities of asthenosphere are rela-ted to the history of neighboring plate action and the active region of co-nvection cell changes with time,in the seismicitive region changes will take place.