摘要
我们通过分析日本东北部海沟强震、日本海中源和深源地震、中国东北部浅源地震以及阿穆尔板块周边地震的活动特征后发现,发生在上述广大地域上的不同类型的地震在时间上有很好的相关关系。仔细分析上述特征,同时考查亚洲部分板块之间的相互关系以及中、深源地震的震源机制结果后我们认为,太平洋板块通过日本东北部岛弧对阿穆尔板块的强烈推挤可能是这些地震的主要力源。在这一力源的作用下,阿穆尔板块发生屈曲。如果该假设成立的话,则我国东北部六级以上地震的线性排列,很有可能是这种屈曲的结果。
In this paper, the author analyses seismic activity of shallow earthquakes in Northeast China, strong ones in the northeastern Japan Sea and peripheral ones of the Amurian plate ,and showed that active periods of these earthquakes are identical. By studying seismicity characteristics and mutual relations between several plates, we concluded that common power of above-mentioned earthquakes mainly originates from frontal extrusion between the Pacific plate and the Amurian one. Under action of the power the Amurian plate probably buckled and lination of M>6. 0 earthquakes in Northeast China is the consequence of the plate buckling.Finally, the author inferred the trend of seismicity in some regions.
出处
《中国地震》
CSCD
北大核心
1991年第4期22-32,共11页
Earthquake Research in China
基金
地震科学联合基金
