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Characterization and application of submarine seismic ambient noise in the Bohai Sea and Yellow Sea

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Characterization and application of submarine seismic ambient noise in the Bohai Sea and Yellow Sea
Submarine seismic ambient noise imaging combines current marine and on-land seismic detection technologies.Based on data from several broadband shallow-sea type ocean bottom seismometers(SOBSs)deployed in the Bohai Sea and north Yellow Sea,this paper analyzes the submarine seismic ambient noise characteristics.It ex-plores the theory,technology,method and application of the submarine seismic ambient noise imaging using the single-point horizontal and vertical spectral ratio method(HVSR).The observations yield the following results:1)Submarine seismic ambient noise has consistent and constant energy,making it an appropriate passive seismic source for submarine high-frequency surface wave investigation.2)Using the HVSR approach,a single three-component OBS could differentiate between the basement and sediments.Array seismic observation could be utilized to extract the frequency dispersion curve and invert it to obtain the velocity structure for more accurate stratification.3)The SOBS we use is suitable for submarine surface wave exploration.4)Tomography results with greater resolution and deeper penetration could be obtained by combining active and passive sources in a simultaneous inversion of the HVSR and frequency dispersion curve.Seamless land-to-ocean seismic research can be accomplished with submarine seismic ambient noise imaging technologies.

Broadband ocean bottom seismometerSubmarine seismic ambient noiseHorizontal and vertical spectral ratio(HVSR)Surface wave exploration

Minzhe Luo、Siqing Liu、Xing Xu、Qingxian Zhao、Ruifeng Wu、Xianqing Wang、Chenglong Wei、Songyong Yuan

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Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou,511458,China

Zhuhai Taide Enterprise Co.,Ltd,Zhuhai,519085,China

Guangzhou Marine Geological Survey,Guangzhou,511458,China

Haikou Marine Geological Survey Center,China Geological Survey,Haikou,571127,China

Institute of Geophysics,China Earthquake Administration,Beijing,101108,China

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Broadband ocean bottom seismometer Submarine seismic ambient noise Horizontal and vertical spectral ratio(HVSR) Surface wave exploration

2024

10.1016/j.eqrea.2024.100311

地震研究进展(英文)
中国地震局

地震研究进展(英文)

影响因子：0.032
ISSN：2096-9996
年,卷(期)：2024.4(4)