摘要
黄海是东亚大陆边缘盆地中地震较活跃的地区，历史上多次发生大地震，对海岸和海底工程造成威胁。本文依据中国台网记录分析了海域地震活动图象，表明黄海地震活动水平与大陆相似。据聚类分析原则划分地震线，并与已知的大地构造资料进行了比较：表明海域地震线基本反映了海底活断层的轮廓。大型地震线走向北东和北西，可达朝鲜半岛，北东向地震线与黄海莫氏面构造走向一致，表明有深部构造背景。
The Yellow Sea is a more active area of strong earthquake in the edge basin of East Asia Continent. Many great earthquakes occurred in the history,and caused a lot of damages to the sea bank and the engineerings at the bottom of the sea.In this paper,the analysis of the seismic pictures of the maritime space according to the network records in China demonstrates that the seismic level in the Yellow Sea is similar to that in the continent.Applying the clustering law,the seismic lines were drawn,and through comparing with the geotectonics,we can say that the maritime seismic lines basically reflect the profile of active faults on the bottom of the sea.The great seismic lines are in NE and NW direction,and may reach the Korean Fesile.In direction,the seismic lines in NE direction are in accordance with the Moho surface in the Yellow Sea,which shows that they have the background of deep tectonics.As to the structure in NW direction,that is also obvious.
出处
《华北地震科学》
1999年第2期28-35,共8页
North China Earthquake Sciences
