基于Landsat数据的郭扎错北面冰川近20年来面积动态变化遥感研究  

Landsat-based Dynamic Area Change of the Glaciers to the North of the Guozhacuo Lake,1991～2009

作　　者：纪鹏[1,2] 郭华东[1] 张露[1] 

机构地区：[1]中国科学院对地观测与数字地球科学中心数字地球重点实验室,北京100094 [2]中国科学院研究生院,北京100049

出　　处：《遥感技术与应用》2011年第2期202-208,共7页Remote Sensing Technology and Application

基　　金：国家973计划项目(2009CB723906);国家自然科学基金项目(41001268)

摘　　要：冰川能够敏感地反映区域环境变化,是研究全球变化的重要因素之一。昆仑山地区冰川集中,是研究冰川动态变化的理想区域。根据郭扎错北面1991-2009年Landsat TM与ETM＋遥感影像,研究了该地区冰川近20 a来的变化情况。结果发现,该地区冰川变化显著,并得出以下结论：①郭扎错北面冰川面积在1991-2009年间具有先增加后减少的波动规律;②该区域内存在东部冰川比西部变化量大和变化率快的差异性;③该地区中峰冰川在2001-2004年间面积大幅增加,可能与2001年11月14日发生在昆仑山口以西的8.1级强烈地震有关;④该研究区内冰川面积变化主要受年均温度和年累积降水量的综合影响。Glaciers can sensitively reflect the changes of the regional environment that they has become one of the important factors to study the global changes.The glaciers of the Kunlun mountains are concentrated.This area is the ideal one to study glacier dynamic changes.According to the Landsat TM and ETM＋ remote sensing images of the year from 1991 to 2009 about the Kunlun moutains,we studied the changes of the glaciers in the recent 20 years.As a result,we found these glaciers changed obviously and concluded that：① The glaciers to the north of the Guozhacuo lake owned the fluctuation pattern from 1991 to 2009;② There existed the difference between the east and west that the changed amount and rate of the east were larger and faster than the west;③ About the phenomenon that the Zhongfeng glacier increased largely between the year 2001-2004,we inferred it may correspond to the Ms 8.1 strong earthquake occurred to the west of the Kunlun mountain pass on November 14th,2001;④ Combined with meteorological data analysis,we inferred that the changes of the glaciers in this area were synthetically caused by the temperature and precipitation.

关 键 词：冰川面积变化 遥感 地理信息系统 昆仑山 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]