极地研究2025，Vol.37Issue(4)：713-723,11.DOI:10.13679/j.jdyj.20250011
基于差分干涉测量短基线集时序分析技术监测东南极托滕2冰下湖动态变化
Monitoring dynamic changes of subglacial Lake Totten2 in Southeast Antarc-tica using differential interferometric short baseline subset time-series analy-sis technique
摘要
Abstract
Totten Glacier is in the region that has undergone the most dramatic thinning in the East Antarctic ice sheet in recent years.The mass balance of this region may be affected by the hydrological activity of Tot-ten2—an active subglacial lake in the upstream catchment of the glacier—over a time scale of several dec-ades.This study applied the small baseline subset interferometric synthetic aperture radar(SBAS-InSAR)to 57 Sentinel-1 radar images from April 2022 to March 2024 to monitor changes in the ice surface elevation of Totten2 at a high spatiotemporal resolution.Results were compared with ICESat-2 ATL11 data.Over the study period,ice sheet elevation decreased continuously,indicating continuous draining of the lake.Close agreement between Sentinel-1 and ICESat-2 data demonstrates that SBAS-InSAR is an effective tool for monitoring subglacial lake activity at small spatiotemporal scales and for studying the hydrological activity of Antarctic subglacial lakes.关键词
雷达影像数据/SBAS-InSAR/冰下湖/高程变化/水文活动Key words
radar image data/SBAS-InSAR/subglacial lake/elevation change/hydrological activities引用本文复制引用
陈丽辉,刘俊,汤登晖..基于差分干涉测量短基线集时序分析技术监测东南极托滕2冰下湖动态变化[J].极地研究,2025,37(4):713-723,11.基金项目
国家自然科学基金(42201489)资助 （42201489）
