基于遥感影像的天山冰川面积变化监测  

Monitoring the Change of Tianshan Glacier Area Based on the Remote Sensing Image

作　　者：周玉杉[1] 王颖洁[1] 周文明[1] 

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《矿山测量》2012年第3期21-25,4,共5页Mine Surveying

基　　金：湖南省科技厅重大专项2008FJ1006 <湖南省极端气象灾害预警评估技术体系研究与示范>;湖南省高校创新平台开放基金项目09K006 极化干涉SAR地形高程测量关键技术研究;2010~2012;湖南省高校创新平台开放基金项目09K005 DIn-SAR可检测的最大和最小地表形变梯度的函数模型研究;2010~2012;2011年国家大学生创新训练立项项目AL11495 <我国西部冰川的变化和运动监测>;2011~2012

摘　　要：文中通过获取我国天山地区2002年和2008年的Landsat ETM+/TM遥感影像数据,运用雪盖指数法监测了2002年和2008年期间冰川面积的变化。结果表明:研究区域的冰川有前进也有退缩,但退缩占主导地位。前进的是一些冰川末端,退缩的主要是一些面积比较小的冰川。整体来看,从2002年到2008年研究区冰川面积退缩2589.78 km2,相当于平均每年退缩431.63 km2,造成冰川面积大幅度减少的主要原因是气温的升高与降水量不足。In the paper,the author uses the method of Snow Index to monitor of changes the glacier area during 2002 and 2008 by getting the 2002 and 2008 remote sensing image data from Landsat Thematic Mapper(TM)and Landsat ETM+/TM in Tianshan region of China.The results suggest that? the glaciers of the study area forward also have retreat,but the retreating dominates on the whole The advanced areas were mainly glacier terminal,however,the retreat of glacier appear in some small glaciers.Overall,the glacier area decreased 2589.78km2 from 2002 to 2008 in the study area,equivalent to withdrawal of 431 .63 km2/a-1 on average,the main reason for the substantial reduction in glacier area is the increase of temperatures and the decrease of precipitation.

关 键 词：冰川 面积变化 退缩 雪盖指数 

分 类 号：P228[天文地球—大地测量学与测量工程]