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.
QI Jiang-hao, ZHANG Xun-hua, WU Zhi-qiang, QIU Xue-lin, ZHAO Ming-hui, XIA Shao-hong, GUO Xing-wei, HAO Tian-yao, ZHENG Yan-peng, FANG Nian-qiao
. Preliminary results of the South Yellow Sea OBS 2013 onshore-offshore joint deep seismic survey[J]. Journal of Tropical Oceanography, 2015
, 34(2)
: 76
-84
.
DOI: 10.11978/j.issn.1009-5470.2015.02.010