X img

官方微信

img

群号:冰川冻土交流群

QQ群:218834310

高级检索
作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2013, Vol. 35 ›› Issue (3): 583-592.doi: 10.7522/j.issn.1000-0240.2013.0067

• 冰冻圈与全球变化 • 上一篇    下一篇

利用卫星资料反演区域冰川冰量变化的尝试——以祁连山为例

王玉哲1,2, 任贾文1, 秦大河1, 秦翔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, 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2012-11-09 修回日期:2013-02-20 出版日期:2013-07-25 发布日期:2013-07-25
  • 作者简介:王玉哲(1987- ), 男, 山东济南人, 2010年毕业于山东师范大学, 现为硕士研究生, 主要从事冰冻圈与全球变化研究. E-mail: wangyuzhe@lzb.ac.cn
  • 基金资助:

    国家重点基础研究发展计划(973计划)项目(2013CBA01801)资助

Regional Glacier Volume Changes Derived from Satellite Data:A Case Study in the Qilian Mountains

WANG Yu-zhe1,2, REN Jia-wen1, QIN Da-he1, QIN Xiang1   

  1. 1. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-11-09 Revised:2013-02-20 Online:2013-07-25 Published:2013-07-25

摘要:

物质平衡是衡量冰川"健康"状况的最好方式, 由于野外工作开展难度大, 物质平衡观测仅局限于少数几条冰川上, 限制了区域冰川物质平衡和冰量变化的评估. 通过卫星高程数据可以监测区域冰川高程变化, 进而可估算其冰量变化. 利用SRTM和ICESat激光测高数据反演了祁连山冰川冰量变化, 结果表明: 21世纪初祁连山冰川处于物质亏损状态, 年平均高程减薄(0.345±0.258) m, 相当于(0.293±0.219) m w.e., 估算祁连山冰川年均冰量损失为(534.2±399.5)×106m3w.e.. 由于祁连山各冰川区相对独立, 相隔较远, 冰川规模普遍不大, 且ICESat地面轨迹在中低纬度分布稀疏, 使得结果的不确定性还很大.

关键词: 冰川高程变化, 冰川冰量变化, SRTM, ICESat, 祁连山

Abstract:

Mass balance is the best measure of glacier health. Owing to laborious field work, mass balance measurements are restricted to a few glaciers, preventing the assessments of regional specific mass balance and glacier volume changes. Satellite elevation data provides feasible opportunities to monitor the glacier elevation changes, and then one can estimate the glacier volume changes easily. Here, the SRTM and ICESat data are used to derive the glacier volume changes in the Qilian Mountains. The results show that glaciers in the Qilian Mountains are losing mass in the early 21st century with a glacier thinning rate of (0.345±0.258)m·a-1((0.293±0.219)m w.e). It is estimated that the average mass loss over the entire study region is (534.2±399.5)×106 m3 w.e.a-1. Due to relative independence and large spatial seperation of various glacierized regions, small scale of glaciers and sparse distribution of ICESat ground tracks, the uncertainty might be high.

Key words: change of glacier elevation, change of glacier volume, SRTM, ICESat, Qilian Mountains

中图分类号: 

  • P343.6