Monitoring and simulation of hydrothermal conditions indicating the deteriorating stability of a perennially frozen moraine dam in the Himalayas
文献类型：期刊论文
| 作者 | Wang, Xin1,3; Yang, Chengde1; Zhang, Yanlin1; Chai, Kailguo1; Liu, Shiyin2; Ding, Yongjian3; Wei, Junfeng1; Zhang, Yong1; Han, Yongshun1 |
| 刊名 | JOURNAL OF GLACIOLOGY
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 64期号:245页码:407-416 |
| 关键词 | glacier stability hydrothermal state moraine dam |
| ISSN号 | 0022-1430 |
| DOI | 10.1017/jog.2018.38 |
| 通讯作者 | Wang, Xin(xinwang_hn@163.com) |
| 英文摘要 | Thermal and hydrological dynamics and their impacts on the stability of a moraine dam were analyzed and simulated for the Longbasaba Lake in the Himalaya, based on soil temperature, moisture and heat flux data observed at different depths in the dam from 2012 to 2016. Annual average heat income is greater than heat expenditure on the dam surface. The mean annual temperature at observed the depths of 0-150 cm is >0 degrees C, although the average annual air temperature was -3.6 degrees C over the dam, indicating a relatively larger temperature difference between moraine dam and air. The volumetric soil moisture content is relatively low with an annual average of 5%, peaking after the snow cover melting and active layer thawing. Simulation results indicate that the average yearly maximum thawing depth has been similar to 0.3 m deeper than the average yearly maximum freezing depth during the observation period. In the past 55 years, the yearly maximum thawing depth has increased, while yearly maximum freezing depth has decreased, implying that the permafrost in the dam has been deteriorating. The annual surplus heat and increasing permafrost thawing depth will result in further deterioration of permafrost and melting of buried ice in the dam, thereby decreasing its stability. |
| 收录类别 | SCI |
| WOS关键词 | ACTIVE-LAYER THICKNESS ; GLACIAL LAKES ; CATASTROPHIC DRAINAGE ; BRITISH-COLUMBIA ; OUTBURST FLOODS ; TIBETAN PLATEAU ; SWISS ALPS ; 3RD POLE ; PERMAFROST ; SNOW |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000434777300006 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557814 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, Xin |
| 作者单位 | 1.Hunan Univ Sci & Technol, Sch Resource Environm & Safety Engn, Xiangtan, Peoples R China 2.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming, Yunnan, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xin,Yang, Chengde,Zhang, Yanlin,et al. Monitoring and simulation of hydrothermal conditions indicating the deteriorating stability of a perennially frozen moraine dam in the Himalayas[J]. JOURNAL OF GLACIOLOGY,2018,64(245):407-416. |
| APA | Wang, Xin.,Yang, Chengde.,Zhang, Yanlin.,Chai, Kailguo.,Liu, Shiyin.,...&Han, Yongshun.(2018).Monitoring and simulation of hydrothermal conditions indicating the deteriorating stability of a perennially frozen moraine dam in the Himalayas.JOURNAL OF GLACIOLOGY,64(245),407-416. |
| MLA | Wang, Xin,et al."Monitoring and simulation of hydrothermal conditions indicating the deteriorating stability of a perennially frozen moraine dam in the Himalayas".JOURNAL OF GLACIOLOGY 64.245(2018):407-416. |
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来源：寒区旱区环境与工程研究所
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