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中国地处欧亚板块的东南部,为印度板块及太平洋板块、菲律宾板块所夹持。帕米尔块体则是印度板块与欧亚板块碰撞的西北边界地区。该地区是强震频发区。在我国,本世纪的几个活跃期中,该区均有强震发生。帕米尔地区强震的发生显示了本区构造活动的加剧,这是否会引起中国大陆其它块体的构造运动出现失稳状态而发震,是我们所关心的问题。本文通过地震活动的统计对此进行了分析和研究。 1996年伽师地区发生7.1级地震后,1997年又连续发生6级以上地震7次,这是否会引起我国大陆其它地区中强地震的发生?为此我们对帕米尔地区1900年以来发生6级以上地震后三年内中国大陆13个地区地震发生的情况进行了较详细的分析。
China is located in the southeastern part of the Eurasian Plate and is held by the Indian Plate and the Pacific Plate and the Philippine Plate. The Pamir block is the northwestern border region where the Indian plate collided with the Eurasian plate. The area is strong earthquake-prone areas. In our country, during the several active phases of this century, strong earthquakes happened in this area. The occurrence of strong earthquakes in the Pamir area shows the intensification of tectonic activities in this area. Whether this will cause the instability of other tectonic movements in the mainland China and generate seismogenic shocks is a concern of us. This paper analyzes and studies the seismic activity statistics. After the 7.1 magnitude earthquake in Jiashi district in 1996, there were seven successive earthquakes of magnitude 6 or more in 1997. Will this lead to the occurrence of moderately strong earthquakes in other areas of mainland China? For this reason, In the three years after the earthquake, the earthquakes occurred in 13 areas in mainland China were analyzed in more detail.