Constraint on the shape of the Manila subduction slab from earthquake relocation using long-term ocean bottom seismometer data
文献类型：期刊论文
| 作者 | Ren Yu; Zhao MingHui2,3; Zhang JiaZheng2; Lv ZuoYong1; Pang XinMing3; Qiu XueLin2,3 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2020 |
| 卷号 | 63期号:5页码:1927 |
| 关键词 | Earthquake observation Ocean Bottom Seismometer (OBS) Manila subduction zone Earthquake relocating |
| DOI | 10.6038/cjg2020N0014 |
| 英文摘要 | The broadband Ocean Bottom Seismometer (OBS) observation is still in the experimental stage. One experiment was carried out for 6 months in the northern Manila subduction zone in 2015. We picked 7562 P-wave and 5002 S-wave travel-times recorded by a broadband station (OBS04) and 718 land stations. Totally 264 earthquakes that occurred from August 2015 to February 2016 in the study area (119 degrees E-123 degrees E,19 degrees N-22 degrees N) were relocated using the Hyposat method. The results show that the hypocenter accuracy has been improved due to the addition of OBS04 deployed near the Manila Trench and reasonable spatial distribution of seismic stations. The hypocenters of relocated earthquakes are much more concentrated and fit well with geological structures than before. Shallow seismic events are dominant and concentrating in this area, which are related to the faults in crust. Four projection profiles of focal depths of relocated earthquakes reveal the upper boundary of the slab in the northern seismic concentrating region. The angles of the subduction slab increase from 10 degrees similar to 22 degrees in the shallow (0 similar to 30 km) to 41 degrees similar to 58 degrees in the deep subsurface (120 similar to 180 km). This research provides a significant constraint on the slab shape of the northern Manila subduction zone as well as valuable experiences and references for broadband OBS observation in the future. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18548]  |
| 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.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China 3.China Earthquake Adm, Guangdong Earthquake Agcy, Key Lab Earthquake Monitoring & Disaster Mitigat, Guangzhou 510070, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren Yu,Zhao MingHui,Zhang JiaZheng,et al. Constraint on the shape of the Manila subduction slab from earthquake relocation using long-term ocean bottom seismometer data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2020,63(5):1927, 1937. |
| APA | Ren Yu,Zhao MingHui,Zhang JiaZheng,Lv ZuoYong,Pang XinMing,&Qiu XueLin.(2020).Constraint on the shape of the Manila subduction slab from earthquake relocation using long-term ocean bottom seismometer data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,63(5),1927. |
| MLA | Ren Yu,et al."Constraint on the shape of the Manila subduction slab from earthquake relocation using long-term ocean bottom seismometer data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 63.5(2020):1927. |
入库方式： OAI收割
来源：南海海洋研究所
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