Downward shift of gas hydrate stability zone due to seafloor erosion in the eastern Dongsha Island,South China Sea
文献类型：CNKI期刊论文
| 作者 | JIN Jiapeng; WANG Xiujuan; HE Min; LI Jie ; YAN Chengzhi; LI Yuanping; ZHOU Jilin; QIAN Jin
|
| 发表日期 | 2020-07-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | bottom simulating reflections(BSRs) downward shift seafloor erosion gas hydrate dissociation |
| 英文摘要 | New acquired and reprocessed three-dimensional(3 D) seismic data were used to delineate the distribution and characterization of bottom simulating reflections(B SRs) in the Chaoshan Sag,in the eastern part of Dongsha Island,South China Sea.Three submarine canyons with different scales were interpreted from the 3 D seismic data,displaying three stages of canyon development and are related with the variation of BSR.Abundant faults were identified from the coherence and ant-tracing attributions extracted from3 D seismic data,which provide the evidence for fluid migration from deeper sediments to the gas hydrate stability zone(GHSZ).The uplift of Dongsha Island created a large number of faults and leads to the increased seafloor erosion.The erosion caused the cooling of the seafloor sediments and deepening of the base of the gas hydrate stability zone,which is attributed to the presence of paleo-BSR and BSR downward shift in the study area.Hence,methane gas may be released during the BSR resetting and gas hydrate dissociation related with seafloor ero sion. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Key R&D Program of China (No.2017YFC0307301-1) ; the National Natural Science Foundation of China(No.41676041) ; the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(No.GML2019ZD0104) ; the National High Technology Research and Development Program of China (863 Program)(No.2013AA092601) |
| 卷 | v.38期:04页:293-305 |
| 语种 | 英文; |
| 分类号 | P618.13;P631.46 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188145]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineGeologyandEnvironment&CenterofDeep-SeaResearch,InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineMineralResources,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 3.UniversityofChineseAcademyofSciences 4.CenterforOceanMega-Science,ChineseAcademyofSciences 5.ShenzhenBranchofChinaNationalOffshoreOilCorporationLtd |
| 推荐引用方式 GB/T 7714 | JIN Jiapeng,WANG Xiujuan,HE Min,et al. Downward shift of gas hydrate stability zone due to seafloor erosion in the eastern Dongsha Island,South China Sea. 2020. |
入库方式： OAI收割
来源：海洋研究所
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