摘要
在我国辽阔的渤海、黄海、东海和南海，只有渤海发生过Ms≥7级地震。而面积狭小的台湾海峡却发生3次7～8级地震、34次5～6．9级地震，是我国大陆邻近海域地震活动强度最大、频度最高的地方。台湾海峡地处欧亚大陆板块与太平洋菲律宾海板块的接合地带，晚更新世晚期以来，它与其两岸在垂直方向上的地壳差异运动相当强烈，才使它不同于黄海、东海和南海，具有强烈的地震活动。根据发震构造背景、断裂活动年代和现今小震活动水平，本文认为，在NE向近岸海域断裂与NW向断裂交汇的泉州海外、厦门海外和东山海外，未来仍有可能发生破坏性地震。
In the vast sea area of the Bohai Sea, Yellow Sea, East China Sea and South China Sea in China, earthquake Ms≥7 has bcen recorded only in Bohal Sea. While the Taiwan Strait with much s1naller area, where three earthquakes Ms= 7~8 and thirty four earthquakes Ms = 5~ 6. 9 have occurred is a region with the greatest intensity and highest frequency of seismic activities in the adjacent sea area of China's Mainland.The Taiwan Strait is located at the junction belt of Eurasian Continental Plate and Pacif ic Ocean-Phillippine Sea Plate. The vertical crustal differential movement was considerably strong in the Taiwan Strait and its both sides since the late stage of Late Pleistocene,and that resulted in the strong seismic activities different from the Yellow Sea, East China Sea and South China Sea.According to the background of seismogenetic structure,age of fault activities and active level of recent minor earthquakes, we considered that the offshore areas of Quanzhou,Xiamen and Dongshan where the NE nearshore fault and NW faults intercross are the regions of -po tential destructive earthquake in the future.
出处
《台湾海峡》
CAS
CSCD
1995年第4期338-347,共10页
Journal of Oceanography In Taiwan Strait
关键词
地质构造
地震
台湾海峡
地壳运动
Geological structure, crustal differential movement, earthquake, Taiwan Strait
