Application of large capacity air gun in three-dimensional crustal structure exploration of the Pearl River estuary area

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Zhang, Xiang^1,2,3 ; Gong, Xuan^3 ; Sun, Jinlong^1

CAS, Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou

510301, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

Guangdong Earthquake Administration, China Earthquake Administration, Guangzhou

510070, China^3

关键词: Artificial sources;    Continuous operation;    Exploration projects;    Field exploration;    Ocean bottom seismographs;    Pearl River estuary;    Seismic exploration;    Three-dimensional structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012035/pdf
DOI  :  10.1088/1755-1315/69/1/012035

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The air gun source has been widely used as an artificial source in seismic exploration of the sea area because of its simple operation, low risk, automatic continuous operation and almost no influence on the observation environment. In 2015, we carried out the 3-D crustal structural exploration project in the Pearl River estuary, 13 seismic sounding explorations were set up in the sea area, and activated air gun source for more than 12,000 times. Through records of ocean bottom seismograph (OBS) and fixed seismic stations, we found that seismic records of OBS can be clearly identified Pg, PmP, and other phases, the records of the fixed seismic stations can be clearly identified the air gun shot events. The results show that the energy of the air gun shot in this field exploration is quite good, and data can support the study of the three-dimensional structure of the crust in the sea by air gun shot records of seismometers.