摘要
对 1910年以来缅甸转换构造区、滇西南旋转构造域等区域的 7级地震与青藏块体 7级地震间的相互关系进行了研究。结果表明 :青藏块体 7级地震的发生不是孤立的 ,与缅甸转换构造区和滇西南旋转构造域的 7级地震之间具有明显的时空关联性 ;地震活动的主要特点表现为时间上的成丛性、空间上的迁移性及丛内迁移的有序性 ;大部分地震丛以缅甸转换构造区或滇西南地区 7级以上地震为牵头地震 ,沿两条路线向南北带及西藏地区迁移 ,具有较为完整的活动图像。
The correlation of the M-S≥7.0 earthquakes in Qinhai-Tibet block, Burma transform tectonic region and the southwestern of Yunnan region has been studied. The results show that the occurrence of earthquakes in Qinhai-Tibet block is not isolated, and the spatial-temporal correlation is very obvious. The main features are the clustering in time, the migrating in space and the orderliness in migratory route. In each cluster, the events usually first occurred in Burma transform tectonic region and the southwestern of Yunnan, then migrate to SN Seismic Belt or to Tibet. The migration has a complete pattern. This conclusions has a practical value for judging regional seismic tendency.
出处
《内陆地震》
2002年第3期260-265,共6页
Inland Earthquake
关键词
青藏块体
7级地震
地震相关性
活动特征
地震预报
Tibet Plateaus
M-S≥7.0 earthquakes
Correlation of earthquakes
Characters of activity
Earthquake prediction
