检索
E-mail
RSS

作者投稿 主编审稿 专家审稿 远程编辑

热带海洋学报 ›› 2009, Vol. 28 ›› Issue (4): 59-65.doi: 10.11978/j.issn.1009-5470.2009.04.059cstr: 32234.14.j.issn.1009-5470.2009.04.059

• 海洋调查与观测 • 上一篇    下一篇

南海北部潮汕坳陷海区海底地震仪调查实验

罗文造1，2,阎贫1,温宁2,王嘹亮2   

  1. 1．中国科学院边缘海重点实验室，中国科学院南海海洋研究所，广东 广州510301；
    2．国土资源部广州海洋地质调查局，广东 广州510760
  • 收稿日期:2008-08-28 修回日期:2008-10-19 出版日期:2009-08-08 发布日期:2010-02-05
  • 通讯作者: 阎贫

Ocean Bottom Seismometer Experiment across Chaoshan Sag in the northern South China Sea

Luo Wen Zhao, ,Wen Ning,Wang Lao Liang   

  1. 1. CAS Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, CAS, Guangzhou 510301, China;
    2. Guanzhou Marine Geotogy, Ministry of Land & Resources, Guangzhou 510760，China
  • Received:2008-08-28 Revised:2008-10-19 Online:2009-08-08 Published:2010-02-05

PDF (PC)

赞

被引次数

12 | 10

摘要： 潮汕坳陷被认为是一个具有良好油气前景的中生代残留沉积坳陷，其中生代地层也被新近的钻井证实。为研究其盆地深部构造，“十五”863课题跨越该区进行了深地质调查。调查采用5台国产海底地震仪记录深部地震资料。处理结果显示本次调查清楚地记录到了来自地壳内部和Moho面的震相，这是国产海底地震仪在南海地区的首次成功实践。海底地震仪记录揭示沿测线的地壳在南海形成过程中减薄程度较低，中生代地层速度较高，代表致密的岩石，这些因素可能不利于油气的储集，需要在勘探中避开。

关键词: 潮汕坳陷, 潮汕坳陷, 地壳结构, 地壳结构, 中生界, 中生界, 地层速度, 地层速度

Abstract: Chaoshan Sag has been regarded as a prospective relic Mesozoic sedimentary sag in the South China Sea. Recent drilling confirms the existence of the Mesozoic group. In one field experiment, five sets of ocean-bottom seismometers assembled by Chinese scientists have been deployed successfully to explore the deep geological structure of the basin. The ocean-bottom seismic data show clear phases from inner crust and Moho discontinuity. The data also reveal that the crust over the Chaoshan Sag thins less compared with the neighboring areas in the northern South China Sea, and the seismic velocity of the Mesozoic formation increases considerably, which implies high consolidation of sedimentary rocks, not prone to petroleum accumulation. Such case should be avoided in future exploration of petroleum.

Key words: ocean-bottom seismometer, ocean-bottom seismometer, Chaoshan Sag, Chaoshan Sag, crustal structure, crustal structure, Mesozoic group, Mesozoic group

中图分类号: 

  • P716.83