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DOI | 10.1088/1748-9326/ab0391 |
Dissolved methane in the residual basins of the Aral Sea | |
Izhitskaya, E. S.1; Egorov, A. V.1; Zavialov, P. O.1; Yakushev, E. V.1,2; Izhitskiy, A. S.1 | |
2019-06-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Russia; Norway |
英文摘要 | Due to catastrophic desiccation, today's Aral Sea consists of a few separate residual basins, characterized by different ecological conditions (the Large Aral, Lake Tshchebas, the Small Aral). This study is the first report on dissolved methane concentrations in these basins. Overall, 48 water samples were obtained and analyzed for methane content. High values of dissolved methane in the anaerobic layer of the Large Aral Sea, including the Chernyshev Bay, are apparently caused by damping of vertical mixing and decomposition of abundant organic matter in anoxic conditions. The estimated methane flux from the surface of the Large Aral Sea is actually higher than that from many other lakes in the world. For the anoxic layer of the Large Aral, certain relations between distributions of methane and other hydrochemical parameters, including dissolved oxygen and hydrogen sulfide, were found. In the brackish Small Aral Sea, methane content was moderate. Lake Tshchebas exhibits intermediate conditions between the Large and the Small Aral seas in terms of salinity and methane concentration. The observed differences of methane content and distributions in separate residual basins are linked with the differences of their mixing and oxygenation regimes. |
英文关键词 | methane anoxic conditions biogeochemical cycle the Aral Sea ecology |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000470888400001 |
WOS关键词 | ANAEROBIC OXIDATION ; BLACK-SEA ; LAKE ; WATER ; CARBON ; CYCLE ; STATE ; FLUX |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/183755 |
专题 | 气候变化 |
作者单位 | 1.Russian Acad Sci, Shirshov Inst Oceanol, Nakhimovskiy Prospect 36, Moscow 117997, Russia; 2.Norwegian Inst Water Res, Gaustadalleen 21, N-0349 Oslo, Norway |
推荐引用方式 GB/T 7714 | Izhitskaya, E. S.,Egorov, A. V.,Zavialov, P. O.,et al. Dissolved methane in the residual basins of the Aral Sea[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(6). |
APA | Izhitskaya, E. S.,Egorov, A. V.,Zavialov, P. O.,Yakushev, E. V.,&Izhitskiy, A. S..(2019).Dissolved methane in the residual basins of the Aral Sea.ENVIRONMENTAL RESEARCH LETTERS,14(6). |
MLA | Izhitskaya, E. S.,et al."Dissolved methane in the residual basins of the Aral Sea".ENVIRONMENTAL RESEARCH LETTERS 14.6(2019). |
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