地理科学 ›› 2010, Vol. 30 ›› Issue (6): 962-967.doi: 10.13249/j.cnki.sgs.2010.06.962

• 论文 • 上一篇    

近45年来托木尔峰青冰滩72号冰川变化特征

王璞玉1, 李忠勤1, 曹敏2, 李慧林1   

  1. 1. 中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室天山冰川站, 甘肃 兰州 730000;
    2. 西北师范大学地理与环境科学学院, 甘肃 兰州 730070
  • 收稿日期:2010-02-11 修回日期:2010-05-25 出版日期:2010-11-20 发布日期:2010-11-20
  • 基金资助:
    国家重点基础研究发展规划(973)项目(2010CB951003)、中国科学院知识创新工程重要方向项目(KZCX2-YW-127)、国家自然科学基金项目(40631001,40571033,40701034,40371028,J0630966)、国家基金委创新群体项目(40121101)资助。

Variation of Qingbingtan Glacier No.72 in Mt. Tuomuer Region during Past 45 Years

WANG Pu-yu1, LI Zhong-qin1, CAO Min2, LI Hui-lin1   

  1. 1. State Key Laboratory of Cryospheric Sciences/Tianshan Glaciological Station, Cold and Arid Region Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000;
    2. College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070
  • Received:2010-02-11 Revised:2010-05-25 Online:2010-11-20 Published:2010-11-20

摘要: 基于天山托木尔峰青冰滩72号冰川2008年高精度差分GPS测量资料,2009年末端重复测量数据以及1964年地形图,通过对比研究近45 a来该冰川的变化特征,结果表明:1964~2009年,青冰滩72号冰川末端退缩1 852 m,年均后退41 m,由此造成面积减少约为1.53 km2,年均减少0.03 km2;1964~2008年,冰舌平均减薄9.59±6 m,年均减薄约0.22±0.14 m,冰储量亏损达14.1±8.8×10-3 km3(12.7±7.9×10-3 km3 w.e.)。与天山其它区域典型监测冰川相比,青冰滩72号冰川消融强烈,是区域气候、末端海拔、冰川类型、表碛覆盖等因素综合影响的结果。

关键词: 青冰滩72号冰川, 托木尔峰地区, 末端变化, 面积变化, 冰面高程变化

Abstract: Qingbingtan Glacier No.72, which was located in Mt. Tuomuer Region of Tianshan Mountains, was studied to analyze its variation based on comparing data of high accuracy Real Time Kinematic-Global Position System (RTK-GPS) in 2008, repeated terminal measuring data in 2009 and the topographical map in 1964. Results indicated that the glacier terminus had retreated by 1852 m, nearly 41 m each year from 1964 to 2009, which brought about the area shrinkage of about 1.53 km2, with a rate of 0.03 km2/a. During 1964-2008, the ice tongue thinned by 9.59?6 m, with the mean thinning rate of 0.22?0.14 m/a, corresponding to the loss in ice volume of 14.1?8.8?10-3 km3 (12.7?7.9?10-3 km3 water equivalent). It was found that Qingbingtan Glacier No.72 was melting intensively comparing with the other monitoring glaciers in different areas of Tianshan Mountains which was influenced by regional climate, elevation of glacier terminus, glacier types, moraine and other factors.

Key words: Qingbingtan Glacier No.72, Mt. Tuomuer Region, terminus change, area change, ice surface-elevation change

中图分类号: 

  • P343.6