Modeling calculation of top occurrence of marine gas hydrates

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Modeling calculation of top occurrence of marine gas hydrates
	Cao, YC ; Chen, DF
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2014
卷号	57 期号:2 页码:618-627
关键词	Sulfate profile Sulfate-methane interface Methane flux Top occurrence of gas hydrate Numerical model
ISSN号	0001-5733
通讯作者	cdf@gig.ac.cn
中文摘要	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.
学科主题	Geochemistry & Geophysics
收录类别	SCI
原文出处	SCIENCE PRESS
WOS记录号	WOS:000332443600025
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10652]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Cao, YC,Chen, DF. Modeling calculation of top occurrence of marine gas hydrates[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(2):618-627.
APA	Cao, YC,&Chen, DF.(2014).Modeling calculation of top occurrence of marine gas hydrates.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,57(2),618-627.
MLA	Cao, YC,et al."Modeling calculation of top occurrence of marine gas hydrates".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 57.2(2014):618-627.