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Mapping the thickness of the gas hydrate stability zone in the South China Sea
Wang, SH; Yan, W; Song, HB; wyan@scsio.ac.cn
2006
发表期刊TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
ISSN1017-0839
卷号17期号:4页码:815-828
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.
部门归属Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China; Chinese Acad Sci, Inst Geol & Geophys, Beijing 100080, Peoples R China; Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou, Guangdong, Peoples R China
关键词Gas Hydrate Thickness Of Gas Hydrate Stability Zone South China Sea
学科领域Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Oceanography
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000243814800012
引用统计
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4382
专题中科院边缘海地质重点实验室
通讯作者wyan@scsio.ac.cn
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Wang, SH,Yan, W,Song, HB,et al. 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, SH,Yan, W,Song, HB,&wyan@scsio.ac.cn.(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, SH,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.
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