摘要
概述了中国东北深震的时空分布、主应力优势方向以及深震区内的火山活动等特征。依据日本海沟到中国东北东部地震空间分布、震源机制解、俯冲板块的温度结构以及东北深震与海沟浅震的关联等大量资料，论述了中国东北深震是西太平洋板块高速度、小倾角向欧亚大陆下俯冲的结果。讨论了中国东北深震的板块构造意义。
Firstly, spatial and temporal distribution, dominant direction of principal compressive stress of deep focus earthquakes in northeast of China and volcanic activity in deep shock area are discribed. Secondly, based on a great amount of data of the spatial distribwtion of earthquake from Japan deep sea trench to northeast of China, focal mechanism solution, temperature structure of subducting plate and relationship between the deep earthquake of China and shallow event of Japan trench, these deep shock are resulted from the western Pacific plate thrusting under the continent of northeast China with small angle (about 26°) and high velocity. Lastly, plate tectonic significance of deep earthquake in the area are discused.
关键词
深源地震
西太平洋
板块俯冲
震源机制
地震
deep focus shock, western Pacific plate subduction, focal mechanism, Northeast of China
