Seabed domes with circular depressions in the North Yellow Sea
文献类型：CNKI期刊论文
| 作者 | Wang B(王冰); Zhang X(张鑫); Luan ZD(栾振东); Chen ZA(陈长安); Yan J(阎军) |
| 发表日期 | 2018-11-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | seabed dome shallow gas North Yellow Sea submarine fresh/brackish groundwater |
| 英文摘要 | Numerous isolated shallow seabed domes with depressions were discovered in the North Yellow Sea in a high-resolution multibeam echosounder survey. Twelve domes were located within a 11 km by 17 km survey area. The domes in this area were between 0.1 m and 1.0 m high with diameters ranging from 250 to 1 700 m. They were surrounded by corresponding depressions and displayed characteristic shapes ranging from circular to elliptical. The acoustic anomalies displayed on the high resolution sub-bottom profile images demonstrated that shallow gas accumulated just beneath these domes, suggesting that the migration and accumulation of the shallow gas caused the formation of these features. Accumulation atop the seabed domes and erosion within the depressions, as indicated by the lithological features of the sediment cores, suggested that seabed bottom currents also played a role in the formation and evolution of these features. In addition, the simultaneous decrease in the chlorite and sulfate content in core d pore water samples confirmed the presence of submarine fresh/brackish groundwater, which is of interest for hydrological budgets and may be a significant component of the regional hydrologic balance. Our findings suggested that shallow gas accumulation and migration are likely coupled to localized groundwater discharge at this domed site. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Strategic Priority Research Program,CAS(No.XDA19060402) ; the NSFC-Shandong Joint Fund for Marine Science Research Centers(No.U1606401) ; the International Partnership for Innovative Team Program(No.20140491526) ; the Chinese Academy of Sciences,and the Taishan Scholar Project Funding(No.tspd20161007) |
| 卷 | v.36期:06页:256-267 |
| 语种 | 英文; |
| 分类号 | P744.4 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188729]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CASKeyLaboratoryofMarineGeologyandEnvironment&CenterofDeepSeaResearch,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences 3.LaboratoryforMarineGeology,QingdaoNationalLaboratoryforMarineScienceandTechnology |
| 推荐引用方式 GB/T 7714 | Wang B,Zhang X,Luan ZD,et al. Seabed domes with circular depressions in the North Yellow Sea. 2018. |
入库方式： OAI收割
来源：海洋研究所
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