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学科主题: Geochemistry & Geophysics
题名: Modeling calculation of top occurrence of marine gas hydrates
作者: Cao, YC ; Chen, DF
通讯作者: cdf@gig.ac.cn
关键词: Sulfate profile ; Sulfate-methane interface ; Methane flux ; Top occurrence of gas hydrate ; Numerical model
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
发表日期: 2014
卷: 57, 期:2, 页:618-627
收录类别: sci
部门归属: [Cao Yun-Cheng ; Chen Duo-Fu] Chinese Acad Sci, CAS Key Lab Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China ; [Chen Duo-Fu] Chinese Acad Sci, CAS Key Lab Marginal Sea Geol, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
项目归属: 海洋地质
摘要: A major problem in evaluation of gas hydrate resources is lack of a reliable technique to constrain the top occurrence of gas hydrates. We have developed a numerical model of the top occurrence of gas hydrates based on that the depleted quantity of sulfate diffusion downward equals to that of methane flux upward at sulfate-methane interface (SMI) and the methane solubility in the water-hydrate system, using steady state and analytical expressions. In situ methane production and sulfate depletion associated with the oxidation of sedimentary organic matter were considered in the model. We applied this model to ODP site 1245 and IODP site 1327, and calculated the top of gas hydrate occurrence at these two sites, yielding 53 mbsf, 83 mbsf, respectively, which are consistent with the top depth estimated by drilling.
原文出处: 查看原文
WOS记录号: WOS:000332443600025
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10652
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Cao, YC; Chen, DF.Modeling calculation of top occurrence of marine gas hydrates,CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(2):618-627
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