New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea
The stratigraphic-diffusive type of gas hydrate system is formed by microbial methane produced in a shallow slope space when flowing laterally into hydrate stable zones and is worth studying for both energy supply and academic understanding. A deposition production model matching the vertical and la...
Published in: | Journal of Marine Science and Engineering |
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Online Access: | http://ir.giec.ac.cn/handle/344007/36021 http://ir.giec.ac.cn/handle/344007/36022 https://doi.org/10.3390/jmse10030434 |
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/36022 2023-12-24T10:18:34+01:00 New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea Guan, Jinan Liang, Yian Wang, Shujia Wan, Lihua Fan, Shuanshi Su, Pibo Zhang, Wei Liang, Deqing 2022-03-01 http://ir.giec.ac.cn/handle/344007/36021 http://ir.giec.ac.cn/handle/344007/36022 https://doi.org/10.3390/jmse10030434 英语 eng MDPI JOURNAL OF MARINE SCIENCE AND ENGINEERING http://ir.giec.ac.cn/handle/344007/36021 http://ir.giec.ac.cn/handle/344007/36022 doi:10.3390/jmse10030434 stratigraphic-diffusive hydrate Dongsha slope sediment deposition process microbial methane production carbon fixation ability RIVER MOUTH BASIN CONTINENTAL-SLOPE METHANE HYDRATE BEARING SEDIMENTS 2-DIMENSIONAL MODEL SUBMARINE-CANYON SHENHU AREA SHORT-RANGE WATER-FLOW SEEPAGE Engineering Oceanography Marine Ocean 期刊论文 2022 ftchacadsciegiec https://doi.org/10.3390/jmse10030434 2023-11-24T01:15:36Z The stratigraphic-diffusive type of gas hydrate system is formed by microbial methane produced in a shallow slope space when flowing laterally into hydrate stable zones and is worth studying for both energy supply and academic understanding. A deposition production model matching the vertical and lateral seabed morphological characteristics was constructed to show the accumulation process, layer timing sequence, and reservoir quality of the stratigraphic-diffusive hydrate system in the Dongsha slope sediments since the Pleistocene. Six representative key system factors at three selected moments (1.5 Ma, 700 ka B.P., and at present) have been exhibited during debris is continuously accumulating. The coexistence of the hydrate decomposition in the lower part and the formation in the upper part, and the uneven distribution of hydrates within the slope sediment surface are explained clearly. By comparing four geological cases with diverse environments, it is shown that the diffusive hydrate system is likely to develop into moderate geological conditions. The most powerful carbon fixation ability in this system was quantified within the time range of 100-50 ka B.P. Finally, it was verified that residual methane would converge near the seafloor interface and then eventually overflow out of the seabed into the seawater. Report Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Journal of Marine Science and Engineering 10 3 434 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
stratigraphic-diffusive hydrate Dongsha slope sediment deposition process microbial methane production carbon fixation ability RIVER MOUTH BASIN CONTINENTAL-SLOPE METHANE HYDRATE BEARING SEDIMENTS 2-DIMENSIONAL MODEL SUBMARINE-CANYON SHENHU AREA SHORT-RANGE WATER-FLOW SEEPAGE Engineering Oceanography Marine Ocean |
spellingShingle |
stratigraphic-diffusive hydrate Dongsha slope sediment deposition process microbial methane production carbon fixation ability RIVER MOUTH BASIN CONTINENTAL-SLOPE METHANE HYDRATE BEARING SEDIMENTS 2-DIMENSIONAL MODEL SUBMARINE-CANYON SHENHU AREA SHORT-RANGE WATER-FLOW SEEPAGE Engineering Oceanography Marine Ocean Guan, Jinan Liang, Yian Wang, Shujia Wan, Lihua Fan, Shuanshi Su, Pibo Zhang, Wei Liang, Deqing New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea |
topic_facet |
stratigraphic-diffusive hydrate Dongsha slope sediment deposition process microbial methane production carbon fixation ability RIVER MOUTH BASIN CONTINENTAL-SLOPE METHANE HYDRATE BEARING SEDIMENTS 2-DIMENSIONAL MODEL SUBMARINE-CANYON SHENHU AREA SHORT-RANGE WATER-FLOW SEEPAGE Engineering Oceanography Marine Ocean |
description |
The stratigraphic-diffusive type of gas hydrate system is formed by microbial methane produced in a shallow slope space when flowing laterally into hydrate stable zones and is worth studying for both energy supply and academic understanding. A deposition production model matching the vertical and lateral seabed morphological characteristics was constructed to show the accumulation process, layer timing sequence, and reservoir quality of the stratigraphic-diffusive hydrate system in the Dongsha slope sediments since the Pleistocene. Six representative key system factors at three selected moments (1.5 Ma, 700 ka B.P., and at present) have been exhibited during debris is continuously accumulating. The coexistence of the hydrate decomposition in the lower part and the formation in the upper part, and the uneven distribution of hydrates within the slope sediment surface are explained clearly. By comparing four geological cases with diverse environments, it is shown that the diffusive hydrate system is likely to develop into moderate geological conditions. The most powerful carbon fixation ability in this system was quantified within the time range of 100-50 ka B.P. Finally, it was verified that residual methane would converge near the seafloor interface and then eventually overflow out of the seabed into the seawater. |
format |
Report |
author |
Guan, Jinan Liang, Yian Wang, Shujia Wan, Lihua Fan, Shuanshi Su, Pibo Zhang, Wei Liang, Deqing |
author_facet |
Guan, Jinan Liang, Yian Wang, Shujia Wan, Lihua Fan, Shuanshi Su, Pibo Zhang, Wei Liang, Deqing |
author_sort |
Guan, Jinan |
title |
New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea |
title_short |
New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea |
title_full |
New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea |
title_fullStr |
New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea |
title_full_unstemmed |
New Insight on the Stratigraphic-Diffusive Gas Hydrate System since the Pleistocene in the Dongsha Area of the Northeastern South China Sea |
title_sort |
new insight on the stratigraphic-diffusive gas hydrate system since the pleistocene in the dongsha area of the northeastern south china sea |
publisher |
MDPI |
publishDate |
2022 |
url |
http://ir.giec.ac.cn/handle/344007/36021 http://ir.giec.ac.cn/handle/344007/36022 https://doi.org/10.3390/jmse10030434 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
JOURNAL OF MARINE SCIENCE AND ENGINEERING http://ir.giec.ac.cn/handle/344007/36021 http://ir.giec.ac.cn/handle/344007/36022 doi:10.3390/jmse10030434 |
op_doi |
https://doi.org/10.3390/jmse10030434 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
3 |
container_start_page |
434 |
_version_ |
1786207604820672512 |