摘要
南极冰冻圈尤其是冰盖边缘的冰川、冰架已经成为全球气候变化的重要指示器,开展冰川运动监测以及表面特征变化监测能对全球气候环境变化进行有效预警。随着搭载不同传感器的卫星发射升空,通过卫星影像进行南极大范围冰川监测成为可能。尤其是SAR卫星影像,由于其全天时、全天候的监测优势,可以忽视南极极夜的影响,且具有较高的监测精度,已经成为南极冰川大范围监测的研究热点。本文系统地梳理了目前基于SAR影像数据进行南极冰川监测的研究进展、SAR卫星影像在南极的利用状况、国内外已经形成的成熟监测理论方法,并对比了SAR影像和光学影像进行冰川监测的优势和劣势,为后续利用SAR影像进行冰川监测和冰流速提取研究提供参考。
The Antarctic frozen layer,especially the glaciers and ice shelves on the edge of the ice sheet,has become an important indicator of global climate change.Monitoring the movement of glaciers and surface characteristics can effectively warn the global climate and environmental change.With simultaneous launch of satellites carrying different sensors,it is possible to monitor the wide range of Antarctic ice sheets through satellite images.In particular,because of the advantages of all day and all-weather monitoring,SAR satellite images can ignore the influence of Antarctic polar night and have high monitoring accuracy,which has become a research hot spot of large-scale monitoring of Antarctic glaciers.This paper systematically reviews the current research progress of glacier monitoring based on SAR image data,the utilization of SAR satellite images in Antarctica,mature monitoring theories and methods at home and abroad,and compares the advantages and disadvantages of glacier monitoring based on SAR image and optical image.It provides a reference for glacier monitoring and ice velocity extraction using SAR images.
作者
刘沼辉
朱李忠
LIU Zhaohui;ZHU Lizhong(Polar Surveying and Mapping Engineering Center of Heilongjiang Administration of Surveying,Mapping and Geoinformation,Harbin 150081,China;Key Laboratory of Polar Surveying and Mapping,Ministry of Natural Resources of the People′s Republic of China,Harbin 150081,China)
出处
《测绘与空间地理信息》
2022年第9期77-81,共5页
Geomatics & Spatial Information Technology
基金
黑龙江测绘地理信息局科技基金(202010)资助。
关键词
SAR
冰川监测
冰流速提取
南极
SAR
glacier monitoring
ice velocity extraction
Antarctic
