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学科主题: Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography
题名: Mapping the thickness of the gas hydrate stability zone in the South China Sea
作者: Wang, SH ; Yan, W ; Song, HB
通讯作者: wyan@scsio.ac.cn
关键词: gas hydrate ; thickness of gas hydrate stability zone ; South China Sea
刊名: TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
发表日期: 2006
卷: 17, 期:4, 页:815-828
收录类别: sci
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
项目归属: 海洋地质
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.
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WOS记录号: WOS:000243814800012
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4382
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Wang, SH; Yan, W; Song, HB.Mapping the thickness of the gas hydrate stability zone in the South China Sea,TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES,2006,17(4):815-828
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