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, Gaohua; Yang, Hongfeng; Lin, Jian1,3; You, Qingyu4 |
| 刊名 | SEISMOLOGICAL RESEARCH LETTERS
 |
| 出版日期 | 2020 |
| 卷号 | 91期号:2页码:814 |
| ISSN号 | 1938-2057 |
| DOI | 10.1785/0220190239 |
| 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. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18576]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing, Peoples R China 3.Chinese Univ Hong Kong, Earth Syst Sci Programme, Shatin, Hong Kong, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou, 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. |
| 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. |
入库方式： OAI收割
来源：南海海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。