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海底水合物区或存在大量以往被忽视的深部来源甲烷（英文）
Enhanced sulfate consumption fueled by deep-sourced methane in a hydrate-bearing area
【作者】
胡钰；
章馨心；
冯东；
J?rn Peckmann；
冯俊熙；
王宏斌；
杨胜雄；
陈多福；
【Author】
Yu Hu;Xinxin Zhang;Dong Feng;J?rn Peckmann;Junxi Feng;Hongbin Wang;Shengxiong Yang;Duofu Chen;Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University;Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology;Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou);Institute for Geology, Center for Earth System Research and Sustainability, Universit?t Hamburg;Key Laboratory of Marine Mineral Resources Guangzhou Marine Geological Survey;
【通讯作者】
冯东;
【机构】
Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University；
Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology；
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)；
Institute for Geology, Center for Earth System Research and Sustainability, Universit?t Hamburg；
Key Laboratory of Marine Mineral Resources Guangzhou Marine Geological Survey；
【摘要】 量化天然气水合物富集区海底硫酸盐还原速率和甲烷氧化速率对了解海洋碳、硫循环至关重要.以南海北部神狐海域为例,基于实测的大面积（达5.2 104 km2）、多站位（85个）海底表层沉积物硫酸盐浓度剖面,我们获得的区域硫酸盐还原速率为5.39 1011mmol a-1.该值明显高于前人利用沉积速率估算的区域硫酸盐还原速率(3.52 1011mmol a-1).有意思的是,两种不同方法获得的区域硫酸盐还原速率的差值(1.87 1011 mmol a-1)恰好能限定来自深部地层中的甲烷通量大小.据此,我们认为以往海底表层沉积环境区域、乃至全球的硫酸盐还原速率可能被较大程度低估.研究同时突显了海底水合物和甲烷渗漏区表层硫酸盐消耗的甲烷相当一部分来自深部地层,而非原地有机质产甲烷形成.今后在进行精确评估全球海底硫酸盐还原和甲烷氧化速率以及水合物资源环境效应时须充分考虑海底深部甲烷的贡献.更多还原
【基金】 partially supported by the National Natural Science Foundation of China (41730528 and 41773091);Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) (GML2019ZD0506)
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【文献出处】
Science Bulletin
,科学通报(英文版)
,
编辑部邮箱
,2022年02期
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【分类号】TQ221.11;P744.4
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【被引频次】1
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【下载频次】93
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