干旱区地理2025，Vol.48Issue(11)：1961-1970,10.DOI:10.12118/j.issn.1000-6060.2024.643
表碛覆盖区冰川活动与边界多源遥感识别研究
Identification of debris-covered glacier activity and boundary by multi-source remote sensing
摘要
Abstract
Glaciers are essential freshwater resources in arid regions,and accurately delineating the boundaries of debris-covered glaciers is critical in assessing water resources.Traditional glacier inventory data often struggle to differentiate the transitional zones between active ice and rock glaciers due to spectral confusion and topographic complexity.This leads to uncertainties in determining glacier extents and evaluating water resources.This study focuses on the Kunjiersu glacier in the western Pamir Plateau,employing a multi-source remote sensing approach that integrates synthetic aperture radar and optical techniques.Utilizing Sentinel-1A offset-tracking technology and TanDEM geodetic methods,we derive glacier surface velocity fields and elevation changes,complemented by visual interpretation of Landsat-8 optical imagery for boundary delineation while analyzing climatic influenc-es.Key findings reveal the following.The central glacier section(3.8-5.8 km from the terminus)consistently shows activity,with peak winter velocities reaching 0.2 m·d-1 and significant mass exchange;from 2013 to 2020,this section experienced ablation,but post-2020 data indicate cumulative thickening of 7.06±6.05 m,confirming ongoing active ice flow.Revised Randolph glacier inventory data suggest a 2.8 km2 underestimation of the origi-nal area of the Kunjiersu glacier.This proposed multi-source collaborative methodology offers theoretical support for identifying glacier activity and updating boundaries of debris-covered glaciers,providing critical insights for dynamic water resource assessment in arid regions and for maintaining global glacier databases.关键词
帕米尔高原/冰川边界/表碛覆盖型冰川/合成孔径雷达Key words
Pamir Plateau/glacier boundary/debris-covered glacier/synthetic aperture radar引用本文复制引用
闫晋堋,蒋宗立,刘时银,张勇,魏俊锋,王欣,申宇峰..表碛覆盖区冰川活动与边界多源遥感识别研究[J].干旱区地理,2025,48(11):1961-1970,10.基金项目
国家自然科学基金项目(42471154,42171134) （42471154,42171134）
湖南省自然科学基金(2023JJ30237,2022JJ30243)资助 （2023JJ30237,2022JJ30243）
