| The characteristics of fluid potential in mud diapirs associated with gas hydrates in the Okinawa Trough | |
| Xu, Ning; Wu, Shiguo; Wang, Xiujuan; Dong, Dongdong | |
| 2006-12-01 | |
| 发表期刊 | TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
 |
| ISSN | 1017-0839 |
| 卷号 | 17期号:4页码:871-881 |
| 文章类型 | Article |
| 摘要 | Many mud diapirs have been identified in the southern Okinawa Trough from a seismic survey using R/V KEXUE I in 2001. The movement and accumulation of free gas related to mud diapirs are discussed in detail by an analysis of fluid potential which is based upon velocity data. It can be found that free gas moves from the higher fluid potential strata to the lower ones and the gas hydrate comes into being during free gas movement meeting the proper criteria of temperature and pressure. In fact, gas hydrates have been found in the upper layers above the mud diapirs and in host rocks exhibiting other geophysical characteristics. As the result of the formation of the gas hydrate, the free gas bearing strata are enclosed by the gas hydrate bearing strata. Due to the high pressure anomalies of the free gas bearing strata the fluid potential increases noticeably. It can then be concluded that the high fluid potential anomaly on the low fluid potential background may be caused by the presence of the free gas below the gas hydrate bearing strata.; Many mud diapirs have been identified in the southern Okinawa Trough from a seismic survey using R/V KEXUE I in 2001. The movement and accumulation of free gas related to mud diapirs are discussed in detail by an analysis of fluid potential which is based upon velocity data. It can be found that free gas moves from the higher fluid potential strata to the lower ones and the gas hydrate comes into being during free gas movement meeting the proper criteria of temperature and pressure. In fact, gas hydrates have been found in the upper layers above the mud diapirs and in host rocks exhibiting other geophysical characteristics. As the result of the formation of the gas hydrate, the free gas bearing strata are enclosed by the gas hydrate bearing strata. Due to the high pressure anomalies of the free gas bearing strata the fluid potential increases noticeably. It can then be concluded that the high fluid potential anomaly on the low fluid potential background may be caused by the presence of the free gas below the gas hydrate bearing strata. |
| 关键词 | Fluid Potential Velocity Analysis Gas Hydrate Mud Diapir Okinawa Trough |
| 学科领域 | Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Oceanography |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000243814800015 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/5140 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China 3.China Univ Petr, Dongying, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Ning,Wu, Shiguo,Wang, Xiujuan,et al. The characteristics of fluid potential in mud diapirs associated with gas hydrates in the Okinawa Trough[J]. TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES,2006,17(4):871-881. |
| APA | Xu, Ning,Wu, Shiguo,Wang, Xiujuan,&Dong, Dongdong.(2006).The characteristics of fluid potential in mud diapirs associated with gas hydrates in the Okinawa Trough.TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES,17(4),871-881. |
| MLA | Xu, Ning,et al."The characteristics of fluid potential in mud diapirs associated with gas hydrates in the Okinawa Trough".TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES 17.4(2006):871-881. |
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