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Journal of Tropical Oceanography ›› 2015, Vol. 34 ›› Issue (2): 76-84.doi: 10.11978/j.issn.1009-5470.2015.02.010CSTR: 32234.14.j.issn.1009-5470.2015.02.010

• Marine Geophysics • Previous Articles     Next Articles

Preliminary results of the South Yellow Sea OBS 2013 onshore-offshore joint deep seismic survey

QI Jiang-hao1, 2, ZHANG Xun-hua2, WU Zhi-qiang2, QIU Xue-lin3, ZHAO Ming-hui3, XIA Shao-hong3, GUO Xing-wei2, HAO Tian-yao4, ZHENG Yan-peng5, FANG Nian-qiao1   

  1. 1. School of Ocean Sciences, China University of Geosciences, Beijing 100083, China;
    2. The Key Laboratory of Marine Hydrocarbon Resources and Environment Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China;
    3. The Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 51030, China;
    4. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
    5. First institute of Oceanography, State Oceanic Administration People’s Republic of China, Qingdao 266061, China
  • Received:2014-08-01 Revised:2014-11-11 Online:2015-04-10 Published:2015-04-12

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Abstract: In order to study the deep tectonic characteristics along the line of Bohai Sea-Shandong Peninsula-South Yellow Sea, using marine air gun source and land explosive source detection, the Bohai Sea-Shandong Peninsula-South Yellow Sea onshore-offshore joint deep seismic survey profile was carried out in 2013. The onshore-offshore deep seismic profile comprises two ocean bottom seismometer (OBS) seismic lines in the Bohai Sea and the South Yellow Sea and one onshore seismic line. This is the first OBS seismic line in the South Yellow Sea. After data preprocessing of South Yellow Sea OBS, including data decoding and data cutting, etc., the results show that the OBS recording quality is good. We can not only identify the seismic phases such as Ps, Pg and PmP but also observe the P-wave seismic phases from the Qianliyan uplift zone for the first time, which means the data processing is feasible. Combined with geological and geophysical data, a preliminary analysis of the phase character in different structural units of the South Yellow Sea was carried out, laying a good foundation for future simulation and interpretation of crust velocity structure.