Structural characteristics and genesis of pockmarks in the northwest of the South China Sea derived from reflective seismic and multibeam data
文献类型：期刊论文
| 作者 | Bai Yang1,2; Song Hai-Bin1; Guan Yong-Xian3; Chen Jiang-Xin1,2; Liu Bo-Ran1,2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2014-07-01 |
| 卷号 | 57期号:7页码:2208-2222 |
| 关键词 | Pockmark Fluid flow Bottom current South China Sea Seismic oceanography |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg20140716 |
| 文献子类 | Article |
| 英文摘要 | Pockmarks are usually residual topographies caused by fluids escaping through the seafloor. The study area of this paper is located in the northwest of the South China Sea, including the southeast part of the Qiongdongnan basin and the north-central part of the Zhongjiannan basin. The fine-grained sediments of the seabed as well as the strong bottom current provide favorable conditions for the formation and development of pockmarks. The main factor for the development of pockmarks is the fluid flow system which is related with faults, gas chimneys, mud volcanoes, mud diapirs, acoustic blanks/acoustic turbidities and enhanced reflections in the study area. The geometric features of pockmarks vary in different regions. Firstly, the sizes of pockmarks change greatly, with widths of tens to hundreds of meters for those associated with bottom current channels and those in the Guangle uplift, and thousands of meters for other portions in the study area, which are usually called giant pockmarks. Secondly, the surface morphologies of pockmarks are complicated, including circle, ellipse, crescent and annulus, which may indicate different stages of pockmark development. Crescent pockmarks may be younger, followed by annular pockmarks, and the circular ones are relatively older. According to this point, the crescent pockmarks are possibly active, which seems to be supported by data of seismic oceanography. |
| WOS关键词 | GAS-CHARGED SEDIMENTS ; SIDE-SCAN SONAR ; SCOTIAN SHELF ; NORWEGIAN TRENCH ; INTERNAL WAVES ; FEATURES ; SLOPE ; BASIN ; GULF ; SKAGERRAK |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000339645100016 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84828]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Bai Yang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guangzhou Marine Geol Survey, Guangzhou 510760, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai Yang,Song Hai-Bin,Guan Yong-Xian,et al. Structural characteristics and genesis of pockmarks in the northwest of the South China Sea derived from reflective seismic and multibeam data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(7):2208-2222. |
| APA | Bai Yang,Song Hai-Bin,Guan Yong-Xian,Chen Jiang-Xin,&Liu Bo-Ran.(2014).Structural characteristics and genesis of pockmarks in the northwest of the South China Sea derived from reflective seismic and multibeam data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,57(7),2208-2222. |
| MLA | Bai Yang,et al."Structural characteristics and genesis of pockmarks in the northwest of the South China Sea derived from reflective seismic and multibeam data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 57.7(2014):2208-2222. |
入库方式： OAI收割
来源：地质与地球物理研究所
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