Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Mineral Deposits》 2002-04
Add to Favorite Get Latest Update

Computation of Thickness of Hydrate Stability Zone in Okinawa Trough

Fang Yinxia 1?2 ,Shentu Haigang 2 and Jin Xianglong 2 (1 Department of Earth Science, Zhejiang, University, Hangzhou 310027, Zhejiang, China;2 Key Lab of Submarine Geoscience, State Ocean Administration, Hangzhou 310012, Zhejiang, China)  
The study of the hydrate stability zone (HSZ) is of great significance in that it is beneficial to the research of the deposition and the distribution features of marine gas hydrate ore, and also to the resource assessment of the marine gas hydrate. Based on the phase balance condition and the corresponding pressure_temperature equation of the gas hydrate, this paper has discussed the effects of such factors as the water depth, seafloor temperature and geothermal gradient on the deposition of marine gas hydrate. According to the relative geometric algorithm, it has also dealt with the theoretical computation method for the thickness of the hydrate stability zone based on the parameters of the water depth, seafloor temperature and geothermal gradient. A simple and practical program was worked out on the Windows Chinese platform according to the available computation method. Furthermore, this paper has analyzed the geological characteristics of Okinawa Trough, considering that Okinawa Trough has favorable mineralization condition for marine gas hydrate. So based on the specific parameters such as the water depth, seafloor temperature and geothermal gradient of Okinawa Trough, the authors used the program to compute the thickness of the hydrate stability zone in Okinawa Trough. The calculated results show that the Okinawa Trough, especially its west slope, is the potential area of the gas hydrate resource.
【Fund】: 国家重点基础研究发展规划项目 (编号为G2 0 0 0 0 467)资助
【CateGory Index】: P744.4
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved