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	Modeling thermokarst lake expansion on the Qinghai-Tibetan Plateau and its thermal effects by the moving mesh method
	Wen, Zhi; Yang, Zhen; Yu, Qihao; Wang, Dayan; Ma, Wei; Niu, Fujun; Sun, Zhizhong; Zhang, Mingli
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2016
卷号	121页码:84-92
关键词	Moving mesh Thermokarst lakes Lake expansion Thermal regime Permafrost
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2015.10.012
通讯作者	Wen, Zhi(wenzhi@lzb.ac.cn)
英文摘要	The increasing number of engineering activities on the Qinghai-Tibetan Plateau, along with a warming climate, tend to induce significant thermokarst processes. However, thermokarst lake development on the plateau and the long-term influence of thermokarst dynamics on the surrounding permafrost have not been fully understood. Based on the moving mesh method, we developed a dynamic model of lake growth with phase change to investigate the morphologic processes of a thermokarst lake and its long-term influence on the local permafrost thermal regime. Our numerical results indicated that lake expansion due to thermokarst development was fairly rapid, and it depended on many factors including lake-bottom temperature and permafrost temperature. The depth and radius of the simulated lake increased gradually from the end of May to the end of the following January, and remained stable from February to May due to the lower lake-bottom temperature. Our results also showed that lake expansion was not very sensitive to climate warming in the first 50 years after the formation of a thermokarst lake, but the lake expansion was clearly affected by a warming climate in the long run (200 years). The development of a thermokarst lake is shown to significantly enhance the thermal effects on the surrounding permafrost. Compared with a fixed-boundary thermokarst lake, an active (moving-boundary) thermokarst lake caused greater thermal disturbance to the permafrost around and beneath it. (C) 2015 Elsevier B.V. All rights reserved.
收录类别	SCI
WOS关键词	THAW LAKES ; PERMAFROST ; REGIME ; ALASKA
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000367111400009
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557149
专题	寒区旱区环境与工程研究所
通讯作者	Wen, Zhi
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wen, Zhi,Yang, Zhen,Yu, Qihao,et al. Modeling thermokarst lake expansion on the Qinghai-Tibetan Plateau and its thermal effects by the moving mesh method[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2016,121:84-92.
APA	Wen, Zhi.,Yang, Zhen.,Yu, Qihao.,Wang, Dayan.,Ma, Wei.,...&Zhang, Mingli.(2016).Modeling thermokarst lake expansion on the Qinghai-Tibetan Plateau and its thermal effects by the moving mesh method.COLD REGIONS SCIENCE AND TECHNOLOGY,121,84-92.
MLA	Wen, Zhi,et al."Modeling thermokarst lake expansion on the Qinghai-Tibetan Plateau and its thermal effects by the moving mesh method".COLD REGIONS SCIENCE AND TECHNOLOGY 121(2016):84-92.

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