Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077309 |
Variations in Gas and Water Pulses at an Arctic Seep: Fluid Sources and Methane Transport | |
Hong, W. -L.1,2; Torres, M. E.3; Portnov, A.2,4; Waage, M.2; Haley, B.3; Lepland, A.1 | |
2018-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:9页码:4153-4162 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway; USA |
英文摘要 | Methane fluxes into the oceans are largely dependent on the methane phase as it migrates upward through the sediments. Here we document decoupled methane transport by gaseous and aqueous phases in Storfjordrenna (offshore Svalbard) and propose a three-stage evolution model for active seepage in the region where gas hydrates are present in the shallow subsurface. In a preactive seepage stage, solute diffusion is the primary transport mechanism for methane in the dissolved phase. Fluids containing dissolved methane have high Sr-87/Sr-86 ratios due to silicate weathering in the microbial methanogenesis zone. During the active seepage stage, migration of gaseous methane results in near-seafloor gas hydrate formation and vigorous seafloor gas discharge with a thermogenic fingerprint. In the postactive seepage stage, the high concentration of dissolved lithium points to the contribution of a deeper-sourced aqueous fluid, which we postulate advects upward following cessation of gas discharge. |
英文关键词 | fluid migration free gas methane Arctic methane seep |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434111700045 |
WOS关键词 | GULF-OF-MEXICO ; HYDRATE RIDGE ; SEA-FLOOR ; CHEMICAL FLUXES ; MARINE-SEDIMENTS ; SUBDUCTION ZONE ; ULLEUNG BASIN ; MUD VOLCANO ; PORE FLUIDS ; COSTA-RICA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25487 |
专题 | 气候变化 |
作者单位 | 1.Geol Survey Norway, Trondheim, Norway; 2.Arctic Univ Norway UiT, Ctr Arctic Gas Hydrate Environm & Climate, Tromso, Norway; 3.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA; 4.Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA |
推荐引用方式 GB/T 7714 | Hong, W. -L.,Torres, M. E.,Portnov, A.,et al. Variations in Gas and Water Pulses at an Arctic Seep: Fluid Sources and Methane Transport[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(9):4153-4162. |
APA | Hong, W. -L.,Torres, M. E.,Portnov, A.,Waage, M.,Haley, B.,&Lepland, A..(2018).Variations in Gas and Water Pulses at an Arctic Seep: Fluid Sources and Methane Transport.GEOPHYSICAL RESEARCH LETTERS,45(9),4153-4162. |
MLA | Hong, W. -L.,et al."Variations in Gas and Water Pulses at an Arctic Seep: Fluid Sources and Methane Transport".GEOPHYSICAL RESEARCH LETTERS 45.9(2018):4153-4162. |
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