Mapping the thickness of the gas hydrate stability zone in the South China Sea

	Mapping the thickness of the gas hydrate stability zone in the South China Sea
	Wang, Shuhong ; Yan, Wen ; Song, Haibin
刊名	TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
	2006-12-01
卷号	17 期号:4 页码:815-828
关键词	gas hydrate thickness of gas hydrate stability zone South China Sea
ISSN号	1017-0839
文献子类	Article
英文摘要	Many researchers have estimated the thickness of the gas hydrate stability zone (GHSZ) and amount of gas hydrate at different areas in the South China Sea (SCS) using varying methods, but few have reported calculations for the whole of the SCS. In this paper, Milkov and Sassen's model is used to calculate the thickness of the GHSZ in the SCS. In addition, an estimation of the amount of gas hydrate and discussed in terms of gas composition and the effects of water depth. Average thicknesses for the GHSZ in the SCS are estimated to be similar to 440 m, similar to 477 m and similar to 553 m based on the relationship between GHSZ thickness and water depth established in this study for 3 kinds of gas hydrates with gas composition containing 100% methane, 96% methane, and 90% methane, respectively. Then, by assuming that gas hydrates are distributed in half of the continental slope area of the SCS, and that the gas hydrate saturation is 1.2% of sediment volume, the amounts of gas hydrate are estimated to be similar to 3.2 x 10(12) m(3), similar to 3.4 x 10(12) m(3), similar to 4.0 x 10(12) m(3), and the volumes of hydrate-bound gases are similar to 5.2 x 10(14) m(3), similar to 5.6 x 10(14) m(3), similar to 6.5 x 10(14) m(3) for the 3 kinds of gas hydrates above, respectively. The results above show that water depth and gas composition are important factors affecting the thickness of the GHSZ in which the thickness of the GHSZ increases with water depth and decreases with the volume of methane, and that the gas hydrate may be a potential energy source in SCS.
WOS关键词	GULF-OF-MEXICO ; CONTINENTAL-SLOPE ; GLOBAL CHANGE ; RESOURCE
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Oceanography
语种	英语
出版者	CHINESE GEOSCIENCE UNION
WOS记录号	WOS:000243814800012
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66464]
专题	中国科学院地质与地球物理研究所
通讯作者	Yan, Wen
作者单位	1.Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shuhong,Yan, Wen,Song, Haibin. Mapping the thickness of the gas hydrate stability zone in the South China Sea[J]. TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES,2006,17(4):815-828.
APA	Wang, Shuhong,Yan, Wen,&Song, Haibin.(2006).Mapping the thickness of the gas hydrate stability zone in the South China Sea.TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES,17(4),815-828.
MLA	Wang, Shuhong,et al."Mapping the thickness of the gas hydrate stability zone in the South China Sea".TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES 17.4(2006):815-828.