地球科学进展 ›› 2011, Vol. 26 ›› Issue (5): 556 -564. doi: 10.11867/j.issn.1001-8166.2011.05.0556

研究论文 上一篇    下一篇

晚更新世以来渤海南部海域断裂活动性
王洪聚 1,刘保华 1,2,李西双 1,2   
  1. 1.国家海洋局第一海洋研究所,山东青岛266061;
    2.海洋沉积与环境地质国家海洋局重点实验室,山东青岛266061
  • 收稿日期:2010-09-19 修回日期:2011-03-17 出版日期:2011-05-10
  • 通讯作者: 王洪聚 E-mail:wanghongju3@yahoo.com.cn
  • 基金资助:

    国家自然科学基金项目“渤海晚第四纪构造特征研究”(编号:40606014);国家高技术研究发展计划项目“海陆联合深部地球物理探测关键技术研究”(编号:2009AA093401)资助.

Activity of the Faults in the Southern Part of Bohai Sea since the Late Pleistocene

Wang Hongju 1, Liu Baohua 1,2, Li Xishuang 1,2   

  1. 1.First Institute of Oceanography,SOA,Qingdao266061, China;
    2.Key Laboratory  of marine Sedimentary and Environmental Geology,SOA,Qingdao266061,CHina
  • Received:2010-09-19 Revised:2011-03-17 Online:2011-05-10 Published:2011-05-10

渤海在新生代经历2次强烈的沉降阶段,海域内各断裂活动对渤海盆地的演化发育产生重要影响。以渤海40°N以南海域单道地震资料为基础,对研究区内断裂活动性进行研究,结果表明:晚更新世(128 ka BP)以来,研究区内断裂活动性很强,以郯庐断裂渤海段最强,其平均垂向活动率大于0.05 mm/a;此期间渤海经历2个构造活跃期,分别为60~53 ka BP和22~10 ka BP;近期内渤海海域可能发生中小震,发生6级以上强震的可能性不大。

There happened two subsiding moments to Bohai Sea in the Cenozoic. The activity of the faults in this area played an important role in affecting the evolution and development of the Bohai basin. Based on seismic data collected in this area, this paper studied the activity of the faults in the southern part of Bohai Sea since the late Pleistocene. The results show that the fault activity is intensive since the late Pleistocene, of which the activity of Tanlu Fault Zone is the most intensive, with the average rate to the vertical slip exceeding 0.06 mm/a. There are two actively tectonic periods, 60 ka B.P. to 53 ka B.P. and 22 ka B.P. to 10 ka B.P., respectively. The faults are possible to induce minor and moderate earthquakes, but hardly the strong ones in recent years.

中图分类号: 

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