Lateral resolution analysis of deep crustal sounding: A case study on the data from ocean bottom seismometers in the northern South China Sea
文献类型：期刊论文
| 作者 | Wang, YL ; Yan, P |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2009 |
| 卷号 | 52期号:9页码:2282-2290 |
| 关键词 | Northern South China Sea Deep crustal structure Ocean bottom seismometer Seismic tomography Lateral resolution |
| ISSN号 | 0001-5733 |
| 通讯作者 | wenhuiwen@163.com |
| 中文摘要 | Deep seismic sounding surveys in the past two decades show obvious crustal structure changes both across and along the northern margin of the South China Sea. In the surveys, some very closely spaced survey lines displayed remarkable differences in crustal structure. To find the reasons for the differences and to analyze the reliability of crustal structure, ocean bottom seismometer (OBS) data from the west and east sides of the Dongsha Islands were reprocessed and inverted with tomography technique. The routine processing and inversion procedures include clock correction, position correction, finite-difference ray-tracing-based tomography, checkerboard test and comparison of the inverted crustal model with initial models. As a key step, we analyzed the lateral velocity resolution and smoothed out the short wavelength velocity variation which maybe most probably artifacts in the final velocity models. Resolution test results show that the lateral resolution declines rapidly with depth. Within the depth range 0 similar to 8 km, the lateral resolution is 10 km; as to the depth of 8 similar to 17 km, the lateral resolution is 10 similar to 40 km; for the lowest parts 17 similar to 33 km, the lateral resolution is 40 similar to 80 km. With such a resolution check to a previous experiment, a previously inferred 6 km-wide deep fault zone that extends downward to the Moho interface in the coastal South China area is proved to be impossible to be imaged clearly. |
| 学科主题 | Geochemistry & Geophysics |
| 收录类别 | SCI |
| 原文出处 | SCIENCE PRESS |
| WOS记录号 | WOS:000270377100012 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/4602]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, YL,Yan, P. Lateral resolution analysis of deep crustal sounding: A case study on the data from ocean bottom seismometers in the northern South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2009,52(9):2282-2290. |
| APA | Wang, YL,&Yan, P.(2009).Lateral resolution analysis of deep crustal sounding: A case study on the data from ocean bottom seismometers in the northern South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,52(9),2282-2290. |
| MLA | Wang, YL,et al."Lateral resolution analysis of deep crustal sounding: A case study on the data from ocean bottom seismometers in the northern South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 52.9(2009):2282-2290. |
入库方式： OAI收割
来源：南海海洋研究所
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