Methane hydrate accumulation model for the Central Nankai accretionary prism
文献类型：期刊论文
| 作者 | He, LJ; Matsubayashi, O; Lei, XL |
| 刊名 | MARINE GEOLOGY
 |
| 出版日期 | 2006-03-30 |
| 卷号 | 227期号:3-4页码:201-214 |
| 关键词 | methane hydrate accumulation model BSR Central Nankai Darcy's Law porous media |
| ISSN号 | 0025-3227 |
| DOI | 10.1016/j.margeo.2005.09.019 |
| 文献子类 | Article |
| 英文摘要 | A two-dimensional transient model of methane hydrate accumulation is designed and applied in the Nankai accretionary prism. Model results show that the formation and distribution of methane hydrate and free gas is related to value of the thermal flux, the fluid flux, the methane flux supplied from below, and methane source within the sediment. The duration of the methane flux is of significant importance. The older the sediments, implying a longer period of methane flux supply from below and within the sediments of the model, the larger the volume percentage of free gas will be. This can explain the occurrence of BSR in a area with lower methane flux observed, but absence of the BSR in the other area with higher methane flux observed. Modeling also predicts that the maximum saturation of methane hydrate is about 1% of the pore space in the area of ODP Site 1178, and the methane hydrate occurrence zone is probably 90-200 m below the sea floor (mbsf), which is supported by both direct and indirect evidence for hydrate. In the area near ODP Site 808, the fault zones having high fluid flow and methane flux may possibly result in methane hydrate formation without BSR occurrence. (c) 2005 Elsevier B.V. All rights reserved. |
| WOS关键词 | GAS HYDRATE ; FLUID-FLOW ; HEAT-FLOW ; SUBDUCTION-ZONE ; REGIME ; TROUGH ; JAPAN ; RATES ; PART |
| WOS研究方向 | Geology ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000236342100003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67000]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | He, LJ |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Natl Inst Adv Ind Sci & Technol, Inst Georesources & Environm, Tsukuba, Ibaraki 3058567, Japan 3.Natl Inst Adv Ind Sci & Technol, Inst Geol & Geoinformat, Tsukuba, Ibaraki 3058567, Japan |
| 推荐引用方式 GB/T 7714 | He, LJ,Matsubayashi, O,Lei, XL. Methane hydrate accumulation model for the Central Nankai accretionary prism[J]. MARINE GEOLOGY,2006,227(3-4):201-214. |
| APA | He, LJ,Matsubayashi, O,&Lei, XL.(2006).Methane hydrate accumulation model for the Central Nankai accretionary prism.MARINE GEOLOGY,227(3-4),201-214. |
| MLA | He, LJ,et al."Methane hydrate accumulation model for the Central Nankai accretionary prism".MARINE GEOLOGY 227.3-4(2006):201-214. |
入库方式： OAI收割
来源：地质与地球物理研究所
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