渤海海峡及邻区活动断裂分布及其活动特征

发布时间：2018-01-11 14:30

本文关键词：渤海海峡及邻区活动断裂分布及其活动特征　出处：《海洋地质与第四纪地质》2016年01期 　论文类型：期刊论文

【摘要】：利用高分辨率地震勘探方法所采集到的资料,对渤海海峡及两侧的活动断裂分布和活动特征进行了分析。渤海海峡内主要受到NNE和NW向两组断裂构造的控制,且这两个方向上的主要断裂均在晚更新世以来有过活动,经过与地震资料比对,发现在这两组方向断裂交汇处活动性尤其强烈,历史上已经引起过较大的地震,并有继续活动的可能。此外,经过分析认为这两组断裂的分布和活动特征,是由新生代以来印度板块和太平洋板块的活动所致,且研究区内NNE向断裂和NW向断裂都参与了发震,但是主要的控震构造还是NNE向断裂。
[Abstract]:The data collected by the high-resolution seismic exploration method. The distribution and characteristics of active faults in the Bohai Strait and its two sides are analyzed. The active faults in the Bohai Strait are mainly controlled by NNE and NW trending fault structures. The main faults in these two directions have been active since the late Pleistocene. By comparing with the seismic data, it is found that the activity at the intersection of these two groups of faults is particularly strong, and has caused large earthquakes in history. In addition, it is considered that the distribution and active characteristics of the two groups of faults are caused by the activities of the Indian plate and the Pacific plate since the Cenozoic. In the study area, both NNE and NW trending faults are involved in the seismogenic process, but the main seismo-controlling structures are the NNE trending faults.
【作者单位】：中国地质科学院研究生部;中国地质调查局青岛海洋地质研究所;
【基金】：国家海洋地质专项工作项目(GZH201200504)
【分类号】：P736.1
【正文快照】： 渤海是延伸进入我国大陆的陆内海,被辽宁、河北、山东、北京和天津等省市所环绕,这些地区占据了中国近九分之一的面积、五分之一的人口和四分之一的城市。由于受渤海海峡阻隔,环渤海南北两岸成为交通死角,极大地限制了客货交流和经济往来。多年来,就一直有着建设渤海海峡跨海

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