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Determining the Orientation of Ocean-Bottom Seismometers on the Seafloor and Correcting for Polarity Flipping via Polarization Analysis and Waveform Modeling

文献类型：期刊论文

作者Zhu, Gaohua4; Yang, Hongfeng4; Lin, Jian1,2; You, Qingyu3
刊名SEISMOLOGICAL RESEARCH LETTERS
出版日期2020-03-01
卷号91期号:2页码:814-825
ISSN号0895-0695
DOI10.1785/0220190239
英文摘要The erroneous flipping of polarity in seismic records of ocean-bottom seismometers (OBSs) could go unnoticed and undiagnosed because it is coupled with unknown horizontal orientation of OBS instruments on the seafloor. In this study, we present detailed approaches to first identify potential errors in the flipping polarity of individual OBS instruments, and then determine the correct orientation of OBS instruments on the seafloor. We first conduct a series of tests by artificially flipping the polarity of seismic records of the Global Seismographic Network stations to determine the effects on orientation estimates, utilizing polarization characteristics of teleseismic P and Rayleigh waves, respectively. The tests demonstrate that erroneous polarity reversal in seismic recording could cause false estimates and reverse radial (R) and tangential (T) components. We determine the sensor orientations through comparing the observed waveforms to the synthetic waveforms, which could solve the ambiguity of R and T directions caused by potential erroneous polarity reversal of OBS data. We then apply the approaches to an OBS data set collected in the southern Mariana subduction zone to obtain the correct orientation for 9 out of 12 OBS instruments.
WOS关键词BROAD-BAND ; FOCAL MECHANISMS ; SUBDUCTION ZONE ; NEW-ZEALAND ; NOISE ; PLATE ; FAULT ; SEISMICITY ; LOCATION
资助项目Hong Kong Research Grant Council[14313816] ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS)[Y4SL021001] ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS)[QYZDY-SSW-DQC005] ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS)[133244KYSB20180029] ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS)[XDB06030201] ; National Natural Science Foundation of China[41890813] ; National Natural Science Foundation of China[91628301] ; National Natural Science Foundation of China[91858207] ; National Natural Science Foundation of China[U1606401] ; National Key R&D Program of China[2018YFC0309800] ; National Key R&D Program of China[2018YFC0310100] ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0205]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000518383600025
出版者SEISMOLOGICAL SOC AMER
资助机构Hong Kong Research Grant Council ; Hong Kong Research Grant Council ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Hong Kong Research Grant Council ; Hong Kong Research Grant Council ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Hong Kong Research Grant Council ; Hong Kong Research Grant Council ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Hong Kong Research Grant Council ; Hong Kong Research Grant Council ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; Faculty of Science at the Chinese University of Hong Kong (CUHK), Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
源URL[http://ir.iggcas.ac.cn/handle/132A11/95589]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Yang, Hongfeng
作者单位1.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA
2.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing, Peoples R China
4.Chinese Univ Hong Kong, Earth Syst Sci Programme, Shatin, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Zhu, Gaohua,Yang, Hongfeng,Lin, Jian,et al. Determining the Orientation of Ocean-Bottom Seismometers on the Seafloor and Correcting for Polarity Flipping via Polarization Analysis and Waveform Modeling[J]. SEISMOLOGICAL RESEARCH LETTERS,2020,91(2):814-825.
APA Zhu, Gaohua,Yang, Hongfeng,Lin, Jian,&You, Qingyu.(2020).Determining the Orientation of Ocean-Bottom Seismometers on the Seafloor and Correcting for Polarity Flipping via Polarization Analysis and Waveform Modeling.SEISMOLOGICAL RESEARCH LETTERS,91(2),814-825.
MLA Zhu, Gaohua,et al."Determining the Orientation of Ocean-Bottom Seismometers on the Seafloor and Correcting for Polarity Flipping via Polarization Analysis and Waveform Modeling".SEISMOLOGICAL RESEARCH LETTERS 91.2(2020):814-825.

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来源：地质与地球物理研究所

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