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学科主题: 地理学::自然地理学
题名: Quantifying the contribution of glacier meltwater in the expansion of the largest lake in Tibet
作者: Tong, K (Tong, Kai)1; Su, FG (Su, Fengge)1, 2; Xu, BQ (Xu, Baiqing)1, 2
通讯作者: Su, FG
关键词: XIAO-DONGKEMADI GLACIER ; INLAND LAKE ; NAM CO ; CLIMATE-CHANGE ; ELEVATION CHANGES ; ROUTING MODEL ; WATER STORAGE ; MASS-BALANCE ; VIC-2L MODEL ; PLATEAU
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
发表日期: 2016
DOI: 10.1002/2016JD025424
卷: 121, 期:19, 页:11158-11173
收录类别: SCI
合作性质: 国内
文章类型: Article
部门归属: 环境
英文摘要: Lake Siling Co is currently the largest endorheic lake in Tibet, and the lake surface area has expanded by about 40% since the 1970s, with a remarkable acceleration after 1999. In this study, a hydrologic modeling framework was established by linking the Variable Infiltration Capacity (VIC) land surface hydrologic model with the degree-day glacier-melt model over the Lake Siling Co basin, with an aim to quantify the contribution of each runoff component to changes in the lake storage. We found that glacier melt contributed to less than 10% of the total water input to the lake during 1979-2013, while precipitation-induced runoff in nonglacierized area was responsible for about 67-75%. The mean annual water input to the lake increased by 2.15x10(9)m(3)yr(-1) in 2000-2013 relative to that in 1979-1999. The amount of precipitation over the lake surface, precipitation-induced runoff, and glacier-melt runoff accounted for 13%, 82%, and 5% of this total increase, respectively, suggesting that the substantial expansion of Siling Co in the 2000s was mostly due to the increase in precipitation-induced runoff. When modeling lake level changes during 1979-2013, we found that the water level rose by 14.1m when glacier melt was included and by only 10.5m, a reduction of about one fourth, when glacier melt was removed. It is concluded that glacier melt played an important role in controlling the water level of Siling Co, although it only contributed less than 10% of water input to the lake during 1979-2013.
语种: 英语
WOS记录号: WOS:000386976100001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7542
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China

Recommended Citation:
Tong, K ,Su, FG ,Xu, BQ . Quantifying the contribution of glacier meltwater in the expansion of the largest lake in Tibet[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2016,121(19):11158-11173.
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