长江科学院院报2024，Vol.41Issue(3)：1-8,8.DOI:10.11988/ckyyb.20231225
基于GPR探测的长江源地区冰川与冻土厚度研究
Thickness of Glacier and Frozen Soil in the Source Region of Changjiang River Based on GPR Detection
摘要
Abstract
Changes of glacier in the source region of Changjiang(also known as Yangtze)River reveal the climate change trends in the Qinghai-Xizang(Tibetan)Plateau.Subglacial topography is crucial for understanding glacier development and movement processes,and is,furthermore,of guiding importance for the soil and water conserva-tion and freshwater resource reserves in the source region of Changjiang River.Based on a decade of scientific expe-dition and research on the source region,the Changjiang River Scientific Research Institute accurately measured the glacier thickness on the main peak of Geladandong in 2022 and 2023 by employing ground-penetrating radar(GPR).We also conducted investigations on the upper limit of permafrost thickness in the Chatan Wetland.In as-sociation with numerical simulations of GPR wave field by multiple glacier and permafrost geological models,we have enhanced the effectiveness and accuracy of GPR in detecting glacier and permafrost in the source region.The findings manifest that both the glacier thickness on the main peak of Geladandong and the upper limit of permafrost in the Chatan Wetland have experienced varying degrees of decline.Long-term observations of glacier thickness and permafrost upper limits are essential and must be continued in order to accumulate more data and analyze trends,thus estimating ice reserves in the detection area and investigating the impacts of climate change on glaciers.关键词
长江源/探地雷达(GPR)/冰川/冻土/气候变化/水土保持/淡水资源储量Key words
source region of Changjiang River/Ground Penetrating Radar(GPR)/glacier/frozen soil/climate change/soil and water conservation/freshwater resource reserve分类
天文与地球科学引用本文复制引用
周黎明,张杨..基于GPR探测的长江源地区冰川与冻土厚度研究[J].长江科学院院报,2024,41(3):1-8,8.基金项目
水利部重大科技项目(SKS-2022039) （SKS-2022039）
中央级公益性科研院所基本科研业务费项目(CKSF2023316/YT,CKSF2023307/YT) （CKSF2023316/YT,CKSF2023307/YT）
