气候变化领域集成服务门户(CCPortal): Estimation and trend detection of water storage at Nam Co Lake, central Tibetan Plateau

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DOI	10.1016/j.jhydrol.2011.05.018
	Estimation and trend detection of water storage at Nam Co Lake, central Tibetan Plateau
	Zhang Bing; Wu Yanhong; Zhu Liping; Wang Junbo; Li Junsheng; Chen Dongmei
通讯作者	Wu, YH (通讯作者)
发表日期	2011
ISSN	0022-1694
EISSN	1879-2707
起始页码	161
结束页码	170
卷号	405 期号:1-2
英文摘要	Nam Co Lake is the highest lake in the central Tibetan Plateau, and existing research on water storage and water level variations are lacking. This paper provides a method for estimating the lake water storage based on historical meteorological records from 1976 to 2009, remote sensing images scattered in this period, in situ bathymetric survey, and GIS techniques, and presents a comprehensive 34-year analysis of intra-annual and inter-annual variations of Nam Co Lake water storage. The multi-year mean water storage of Nam Co Lake is 842.36 x 10(8) m(3), with the maximum water depth of about 98 m. During 1976-2009, the lake water storage increased from 786.06 x 10(8) m(3) to 870.30 x 10(8) m(3), with a tendency value of 2.67 x 10(8) m(3)/a; the lake area enlarged from 1927.48 km(2) to 2015.12 km(2), with a tendency value of 2.71 km(2)/a. The lake area fluctuations annually, increasing from April of each year until late September and early October, then decreasing until March of the next year. Climate change has a significant impact on the water storage variation of the lake. A general pattern of warming temperature is evident with the regional annual mean air temperature increasing significantly by 0.404 degrees C/10 a. Preliminary analysis indicates that the enlarging status of Nam Co Lake water storage is closely related to increasing of precipitation and stream runoff especially coming from the input of glacial meltwater. By combining this data with other research, it can be presented that under the trend of global warming, on Tibetan Plateau, the inland lakes which depend on the rainfall and river supply in the basin are shrinking, while the lakes which depend on glacial meltwater supply are enlarging. Climate change is an important factor promoting the lake variation. (C) 2011 Elsevier B.V. All rights reserved.
关键词	CLIMATE-CHANGE CHINA BALANCE BASIN GEOCHEMISTRY CATCHMENT GLACIER IMPACT
英文关键词	Nam Co Lake; Tibetan Plateau; Water storage; Climate change; Remote sensing
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000293429200014
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257865
推荐引用方式 GB/T 7714	Zhang Bing,Wu Yanhong,Zhu Liping,et al. Estimation and trend detection of water storage at Nam Co Lake, central Tibetan Plateau[J]. 中国科学院青藏高原研究所,2011,405(1-2).
APA	Zhang Bing,Wu Yanhong,Zhu Liping,Wang Junbo,Li Junsheng,&Chen Dongmei.(2011).Estimation and trend detection of water storage at Nam Co Lake, central Tibetan Plateau.JOURNAL OF HYDROLOGY,405(1-2).
MLA	Zhang Bing,et al."Estimation and trend detection of water storage at Nam Co Lake, central Tibetan Plateau".JOURNAL OF HYDROLOGY 405.1-2(2011).