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Journal of Tropical Oceanography >

2012 , Vol. 31 >Issue 3: 71 - 78

DOI: https://doi.org/10.11978/j.issn.1009-5470.2012.03.010

Marine geomorphology

Preliminary results of onshore-offshore seismic experiments in a potential strong earthquake area off the Pearl River Estuary

  • CAO Jing-He ,
  • JIA Shao-Gong ,
  • SUN Jin-Long ,
  • SHU Dun-Jiang ,
  • XU Hui-Long
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  • 1. Key Laboratory of Marginal Sea Geology of CAS, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2011-09-26

  Revised date: 2012-02-08

  Online published: 2012-09-11

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Abstract

An onshore-offshore seismic experiment is the most effective method to study the deep crustal structure of land-ocean transitional area. In order to study the deep seismogenic structure of potential strong earthquake zone off the Pearl River Estuary, this paper compares the data of onshore-offshore seismic experiments off the Pearl River Estuary in 2004 and 2010, with emphasis placed on analyzing the profile OBS2010-1 located at the land-ocean transitional area off the Dangan Islands. The data-processing of the profile gives high-quality data. We obtained clear shallow-crustal structure from multi-channel seismic data. Various seismic phases were recorded by permanent seismic stations, portable seismic stations, and Ocean Bottom Seismometers. The permanent seismic stations received air-gun signals over a distance of 360 km. All these provide a strong base for the study of deep seismogenic structure of the potential strong earthquake zone for future research.

Key words： onshore-offshore seismic experiment; Pearl River Estuary; potential strong earthquake zone; crustal structure; littoral fault zone

Cite this article

CAO Jing-He , JIA Shao-Gong , SUN Jin-Long , SHU Dun-Jiang , XU Hui-Long . Preliminary results of onshore-offshore seismic experiments in a potential strong earthquake area off the Pearl River Estuary[J]. Journal of Tropical Oceanography, 2012 , 31(3) : 71 -78 . DOI: 10.11978/j.issn.1009-5470.2012.03.010

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