1996年南黄海6.1级地震构造背景及异常特征

STRUCTURAL BACKGROUND AND ANOMALOUS FEATURES OF SOUTH YELLOW SEA Ms6.1 EARTHQUAKE IN 1996

利用黄海与东海海底地貌、海底活动构造研究成果，对1996年11月9日南黄海6．1级地震地质构造背景做了初步分析。根据震前对南黄海地区的震情追踪表明，这次地震前震中100～200km范围内无明显的测震学异常现象，而异常主要分布于南黄海中、北部地区，认为南黄海6．1级一类地震的地点预测是十分困难的。

The authors preliminarily analyse the geologic structral background of South Yellow Sea Ms6. 1 earthquake on Nov. 9, 1996 by using the results of submarine geomorphology and submarine tectonism in Yellow Sea and East Sea. The results show that there are no seismometry anomalies in epicentral 100～200km before the earthquake,and the anomalies distribute in the central and northern South Yellow Sea,and it is difficult to forecast the occurrence place of the earthquake with Ms6. 1 in Soath Yellow Sea.