Hydrothermal processes of Alpine Tundra Lakes, Beiluhe Basin, Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Lin, Zhanju; Niu, Fujun1; Liu, Hua; Lu, Jiahao |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2011-03-01 |
| 卷号 | 65期号:3页码:446-455 |
| 关键词 | Hydrothermal process Permafrost Alpine tundra lake Qinghai-Tibet Plateau Beiluhe Basin |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2010.10.013 |
| 通讯作者 | Niu, Fujun(niufujun@lzb.ac.cn) |
| 英文摘要 | Most of the alpine tundra lakes, of average size 8,500 m(2), are widely spread in the Beiluhe Basin on the Qing-Tibet Plateau, where ice-rich permafrost exists. Approximately 70% of the lakes are elliptical in shape and 15% are elongated. About 80% of the lakes are unfrozen to the bottom throughout the year while a larger portion of it, about 60%, may be underlain by taliks that penetrate permafrost The BLH-A Lake, a representative lake with 2-m deep water in the region, has been observed for about four years (from 2006 to 2009). Ice starts to cover on the lake-surface after mid-October, and its thickness increases to 60 to 70 cm by the end of cold season. The ice cover then starts to melt in later April and melts completely around mid-May. The lake-surface temperatures change sinusoidally with the air temperatures, but lagging about half a month. The water warms with the increase of the water depth, and the maximum annual temperature appears at depth of 1.5 m with a value of 14.3 degrees C on July 30, 2007. The lake-bottom temperatures are not isothermal at different depths for most time of a year. It may be related to the variable climate, little snow, and intensive solar radiation. The mean annual lake-bottom temperatures are about 5.5 degrees C in the deep pool with 2 m deep water and 4.3 degrees C in the shallow nearshore zone with 1 m deep water. The warm lake-bottom causes considerable disturbance to the permafrost. Surveyed data show that there is no permafrost under the lake when the mean annual lake-bottom temperature is over 5 degrees C. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | WESTERN ARCTIC COAST ; PERMAFROST REGIONS ; CANADA ; ENVIRONMENT ; AREA |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000287787300018 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556589 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Niu, Fujun |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Frozen Soil Engn Cold & Arid Reg En, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Zhanju,Niu, Fujun,Liu, Hua,et al. Hydrothermal processes of Alpine Tundra Lakes, Beiluhe Basin, Qinghai-Tibet Plateau[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2011,65(3):446-455. |
| APA | Lin, Zhanju,Niu, Fujun,Liu, Hua,&Lu, Jiahao.(2011).Hydrothermal processes of Alpine Tundra Lakes, Beiluhe Basin, Qinghai-Tibet Plateau.COLD REGIONS SCIENCE AND TECHNOLOGY,65(3),446-455. |
| MLA | Lin, Zhanju,et al."Hydrothermal processes of Alpine Tundra Lakes, Beiluhe Basin, Qinghai-Tibet Plateau".COLD REGIONS SCIENCE AND TECHNOLOGY 65.3(2011):446-455. |
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来源：寒区旱区环境与工程研究所
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