成果归属机构：

地球科学与资源学院

作者：

Zhang, Guoqing ; Xie, Hongjie ; Kang, Shichang ; Yi, Donghui ; Ackley, Stephen F.

单位：

Univ Texas San Antonio, Lab Remote Sensing & Geoinformat, San Antonio, TX 78249 USA;China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China;E China Inst Technol, State Key Lab Breeding Base Nucl Resources & Envi, Nanchang 330013, Jiangxi, Peoples R China;Chinese Acad Sci, Lab Tibetan Environm Changes & Land Surface Proc, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China;Chinese Acad Sci, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China;SGT Inc, Cryospher Sci Branch, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

关键词：

Tibetan Plateau; Lake level; ICESat; Salt lake; Glacier melting

摘要：

In this study. ICESat altimetry data are used to provide precise lake elevations of the Tibetan Plateau (IF) during the period of 2003-2009. Among the 261 lakes examined ICESat data are available on 111 lakes: 74 lakes with ICESat footprints for 4-7 years and 37 lakes with footprints for 1-3 years. This is the first time that precise lake elevation data are provided for the 111 lakes. Those ICESat elevation data can be used as baselines for future changes in lake levels as well as for changes during the 2003-2009 period. It is found that in the 74 lakes (56 salt lakes) examined, 62 (i.e. 84%) of all lakes and 50 (i.e. 89%) of the salt lakes show tendency of lake level increase. The mean lake water level increase rate is 0.23 m/year for the 56 salt lakes and 0.27 m/year for the 50 salt lakes of water level increase. The largest lake level increase rate (0.80 m/year) found in this study is the lake Cedo Caka. The 74 lakes are grouped into four subareas based on geographical locations and change tendencies in lake levels. Three of the four subareas show increased lake levels. The mean lake level change rates for subareas I, II, III, IV, and the entire TP are 0.12, 0.26, 0.19, -0.11, and 0.2 m/year, respectively. These recent increases in lake level, particularly for a high percentage of salt lakes, supports accelerated glacier melting due to global warming as the most likely cause. (C) 2011 Elsevier Inc. All rights reserved.

基金：

U.S. NASA [NNX08AQ87G]; State Key Laboratory Breeding Base of Nuclear Resources and Environment at East China Institute of Technology [101110]; China Scholarship Council, University of Texas at San Antonio

语种：

英文

DOI：

10.1016/j.rse.2011.03.005

来源：

REMOTE SENSING OF ENVIRONMENT,2011(7):1733-1742.

出版日期：

2011-07-15

提交日期：

2017-12-14

引用参考：

Zhang, Guoqing; Xie, Hongjie; Kang, Shichang; Yi, Donghui; Ackley, Stephen F.. Monitoring lake level changes on the Tibetan Plateau using ICESat altimetry data (2003-2009)[J]. REMOTE SENSING OF ENVIRONMENT,2011(7):1733-1742.