表碛型冰川的时序InSAR识别方法与形变监测研究  

Deformation monitoring and recognition of debris-covered glacier by MT-InSAR

作　　者：黄淞波 常占强[1,2] 谢酬 田帮森 杨箐 HUANG Songbou;CHANG Zhanqiang;XIE Chou;TIAN Bangsen;YANG Qing(State Key Laboratory Incubation Base of Urban Environmental Process and Digital Simulation,Capital Normal University,Beijing 100048,China;Key Laboratory of 3D Information Acquisition and Application,MOE,Capital Normal University,Beijing 100048,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;Zhejiang Key Laboratory of Microwave Target Characteristic Measurement and Remote Sensing,Huzhou,Zhejiang 313200,China)

机构地区：[1]首都师范大学城市环境过程和数字模拟国家重点实验室培育基地,北京100048 [2]首都师范大学三维信息获取与应用教育部重点实验室,北京100048 [3]中国科学院空天信息创新研究院,北京100094 [4]浙江省微波目标特性测量与遥感重点实验室,浙江湖州313200

出　　处：《测绘科学》2022年第1期102-111,120,共11页Science of Surveying and Mapping

基　　金：国家重点研发计划项目(2018YFC0809400,Y930080BD4);四川省地质灾害隐患遥感识别监测项目(YG-2020-08);国家自然科学基金重点项目(41930109/D010702)。

摘　　要：为了对表碛覆盖型冰川边界进行识别并掌握其变化,以伦道夫(RGI6.0)冰川编目为基础,基于Sentinel-1数据运用时序InSAR技术对昆仑山东段表碛覆盖型冰川进行了形变监测。根据2014年10月至2020年9月表碛覆盖下冰川的时序形变情况,将InSAR形变与光学影像相结合验证冰川边界。结果表明:对昆仑山东段研究区域内280条冰川边界的研究中,探测到3处表碛覆盖型冰川,对边界进行调整后冰川面积分别增加0.19、0.1、0.18 km^(2)。根据时序形变,发现冰川表碛形变呈现明显的季节周期性,形变与温度、坡向显著相关。另外,表碛覆盖型冰川的变形幅度在(-5,5)cm范围内,暖季变形幅度最大,且地形对突变幅度造成影响。这表明时序InSAR技术可对表碛覆盖型冰川进行形变监测与识别研究。In order to identify the boundary of the debris-covered glaciers and understand its variation mechanism,time-series analysis of the sentinel-1 SAR data were carried out by using InSAR technology.The Randolph Glacier Inventory 6.0 was statistically verified and deformation monitoring was conducted on the glaciers in the eastern Kunlun Mountains.According to the sequential deformation of the debris-covered glaciers from October 2014 to September 2020,variation of the underlying glaciers was obtained,and then the deformation was combined with optical image to help verify boundary of the glaciers.The results show that:(1)A total of 280 glacial boundaries in the study area of the eastern Kunlun Mountain were statistically verified,and three debris-covered glaciers were taken as examples to adjust their boundaries,and their adjusted areas increased by 0.19,0.1 and 0.18 km respectively;(2)On the basis of the sequential deformation,it is found that the glacier surface shows obvious seasonal periodicity.The fluctuation of glacier deformation is significantly correlated with the change of temperature;(3)The deformation amplitude of debris-covered glaciers is within the range of(-5,5)cm,among which the deformation amplitude is the largest from the beginning of May to the end of August and the smallest from the beginning of September to the end of December every year.Moreover,different terrains will also affect the abrupt transition amplitude.Therefore,it shows that the MT-InSAR technology can be used to monitor and identify the deformation of the debris-covered glaciers.

关 键 词：时序InSAR 表碛覆盖型冰川识别 形变监测 

分 类 号：P237[天文地球—摄影测量与遥感]