Changes of Four Selected Glaciers in The Tomor Region,Tian Shan,Central Asia Using High-Resolution Remote Sense Image Together with Field Survey,From 1964 to 2009
会议名称：《地理学核心问题与主线——中国地理学会2011年学术年会暨中国科学院新疆生态与地理研究所建所五十年庆典》
会议日期：2011年
学科分类：07[理学] 0705[理学-地理学] 070501[理学-自然地理学]
关 键 词：GPS ice surface-elevation change glacier change climate change
摘 要：As the major water resource of the Tarim River, glaciers in the Tomor region have suffered major losses of ice in the last several *** on comparing topographic maps,high-resolution remote sense image and the field survey data,spatially distributed changes of ice-surface elevation,terminus position and area of four selected glaciers in the Tomor region(Qingbingtan glacier No.72,Qingbingtan glacier No.74,Keqikekuzibayi glacier and Tomor glacier) over the period 1964-2009 have been computed in this *** ice surface-elevation changes of Qingbingtan glacier No.72 had been studied by comparing DEMs derived at different *** approach allowed the determination of ice surface-elevation changes between 1964 and 2008,yielding a mean thinning rate of-0.22±0.14 m a-1 for the tongue *** 1964 to 2009,Qingbingtan glacier No.72,Qingbingtan glacier No.74,Keqikekuzibayi glacier and Tomor glacier retreated by 1852 m,1350 m,985 m and 135 m with an annual retreat of 41.1 m,30.0 m,22.9 m and 3.0 m,respectively. The 21.5%,14.7%,4.1%and 0.3%area reduction as observed over the past 0 years corresponds to the area reduction rate of 0.034 km2 a-1,0.031 km2 a-1,0.041 km2 a-1 and 0.021 km2 a-1 for Qingbingtan glacier No.72, Qingbingtan glacier No.74,Keqikekuzibayi glacier and Tomor glacier,*** dramatic ice thinning and the related terminus retreat and area loss of the four glaciers suggests that glaciers in the Tomor region might currently be suffering negative mass balance in response to the ongoing climatic changes,especially the temperature rising, as well as debris cover would not prevent the glaciers from a fast reaction to climate forcing.