Cold seep related gas hydrate systems in the northern South China Sea: Activity and evolution constrained by high chlorinity and geophysical data
文献类型：期刊论文
| 作者 | Jin, Jiapeng2; Wang, Xiujuan2,3,4; Kuang, Zenggui5; Deng, Wei5; Li, Lixia6; Lai, Hongfei5; Zhang, Xin2; Wang, Minxiao1; Li, Sanzhong3,4; Li, Yanlong2 |
| 刊名 | MARINE GEOSCIENCE AND ENERGY RESOURCES
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 186页码:15 |
| 关键词 | Active gas hydrate system High chlorinity Gas flux Cold seep Geological controls |
| ISSN号 | 3117-5783 |
| DOI | 10.1016/j.marger.2026.207691 |
| 通讯作者 | Wang, Xiujuan(wangxiujuan@ouc.edu.cn) ; Wu, Nengyou(wuny@ms.giec.ac.cn) |
| 英文摘要 | High chlorinity in the pore water within the gas hydrate-bearing sediments indicates recent or ongoing formation of gas hydrate, but its role in reflecting and assessing gas hydrate and cold seep system activity remains unclear. This study categorizes active gas hydrate systems into buried recent active gas hydrate system, active cold seep, and paleo-cold seep, based on high chlorinity locations, gas hydrate-bearing sediment distribution, and seafloor characteristics. Focusing on gas hydrate drilling sites with high chlorinity in the northern South China Sea, we used well log data, chlorinity, and a one-dimensional decay model to constrain the gas hydrate formation times. Results show that the active cold seep at Site GMGS6-W01 in the Qiongdongnan Basin, marked by gas plumes and mussels on the seabed, is the youngest, estimated at 0.5 to 2 thousand years old, followed by buried recent active gas hydrate system at Sites GMGS3-W18&19 and GMGS4-SC01&SC02 in the Pearl River Mouth Basin, which is about 19-29 thousand years old. In contrast, the paleo-cold seeps at Site GMGS2-W16 in the Taixinan Basin have the widest age range, with potential multiple activities occurring between 2 and 39 thousand years ago. Gas sources and migration pathways are the main geological controls on the variation of gas fluxes, which together with reservoirs, influence gas hydrate accumulation and morphology. Active gas hydrate systems are controlled by fluid migration structures such as faults, gas chimneys, diapirs, and hydrate chimneys, as well as recent rapid sedimentation events. Paleo-cold seeps will form when new clay sediments cover the existing cold seeps. Our results emphasize the importance of high chlorinity in analyzing the accumulation and evolution of active gas hydrate systems, aiding in understanding gas hydrate distribution and the associated free gas conversion. |
| WOS关键词 | RIVER MOUTH BASIN ; METHANE SEEPAGE ; TAIXINAN BASIN ; SHENHU AREA ; ACCUMULATION ; WATER ; SEDIMENTS ; RIDGE ; CASCADIA ; FEATURES |
| 资助项目 | International Science & Technology Cooperation Program of China[2023YFE0119900] ; National Natural Science Foundation of China[42206063] ; National Natural Science Foundation of China[42376058] ; National Natural Science Foundation of China[42076072] ; Research start-up funds of Zhufeng Scholars Program ; State Key Laboratory of Natural Gas Hydrate[2022-KFJJ-SHW] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001720589600003 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/205148]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Wang, Xiujuan; Wu, Nengyou |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Laoshan Lab, Qingdao 266237, Peoples R China 3.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Key Lab Submarine Geosci & Prospecting Tech, MOE, Qingdao 266100, Peoples R China 4.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 5.Guangzhou Marine Geol Survey, Guangzhou 510000, Peoples R China 6.CNOOC Res Inst Co Ltd, Beijing 100027, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, Jiapeng,Wang, Xiujuan,Kuang, Zenggui,et al. Cold seep related gas hydrate systems in the northern South China Sea: Activity and evolution constrained by high chlorinity and geophysical data[J]. MARINE GEOSCIENCE AND ENERGY RESOURCES,2026,186:15. |
| APA | Jin, Jiapeng.,Wang, Xiujuan.,Kuang, Zenggui.,Deng, Wei.,Li, Lixia.,...&Wu, Nengyou.(2026).Cold seep related gas hydrate systems in the northern South China Sea: Activity and evolution constrained by high chlorinity and geophysical data.MARINE GEOSCIENCE AND ENERGY RESOURCES,186,15. |
| MLA | Jin, Jiapeng,et al."Cold seep related gas hydrate systems in the northern South China Sea: Activity and evolution constrained by high chlorinity and geophysical data".MARINE GEOSCIENCE AND ENERGY RESOURCES 186(2026):15. |
入库方式： OAI收割
来源：海洋研究所
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