A Preliminary Study of the Gas Hydrate Stability Zone in the South China Sea
A Preliminary Study of the Gas Hydrate Stability Zone in the South China Sea
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DOI：
10.1111/j.1755-6724.2002.tb00095.x
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发表时间：
2002-12
期刊：
影响因子：
--
通讯作者：
Jin Chunshuang;W. Jiyang
中科院分区：
文献类型：
--
作者：
Jin Chunshuang;W. Jiyang
在分析海底温度和地温梯度的基础上，利用南中国海区天然气水合物相界面曲线和海底温度-水深曲线，研究了天然气水合物稳定的温压条件。在海洋环境中，南中国海甲烷水合物在大于550m的水深处保持稳定。在此基础上，利用相边界曲线和温度-深度方程计算了南中国海天然气水合物稳定带厚度。结果表明，东沙群岛东南部、西沙群岛东北部和南沙群岛北部天然气水合物具有较好的稳定带厚度前景。
Abstract Based on the analysis of sea‐bottom temperature and geothermal gradient, and by means of the phase boundary curve of gas hydrate and the sea‐bottom temperature versus water depth curve in the South China Sea, this paper studies the temperature and pressure conditions for gas hydrate to keep stable. In a marine environment, methane hydrate keeps stable at water depths greater than 550 m in the South China Sea. Further, the thickness of the gas hydrate stability zone in the South China Sea was calculated by using the phase boundary curve and temperature‐depth equations. The result shows that gas hydrate have a better perspective in the southeast of the Dongsha Islands, the northeast of the Xisha Islands and the north of the Nansha Islands for thicker stability zones.