Estimating glacier dynamics and supraglacial lakes together with associated regional hazards using high-resolution datasets in Pamir  

作　　者：SAFAROV Mustafo KANG Shichang FAZYLOV Ali GULAYOZOV Majid BANERJEE Abhishek NAVRUZSHOEV Hofiz CHEN Pengfei XUE Yuang MURODOV Murodkhudzha 

机构地区：[1]Key Laboratory of Cryospheric Science and Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China [2]Research Center for Ecology and Environment of Central Asia(Dushanbe),Dushanbe 734063,Tajikistan [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]Institute of Water Problems,Hydropower and Ecology of the National Academy of Sciences of Tajikistan,Dushanbe 734042,Tajikistan [5]Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China [6]Mountain Societies Research Institute,University of Central Asia,Dushanbe 734000,Tajikistan [7]State Scientific Institution“Center for Research of Glaciers of the National Academy of Sciences of Tajikistan”,Dushanbe 734025,Tajikistan

出　　处：《Journal of Mountain Science》2024年第11期3767-3788,共22页山地科学学报（英文）

基　　金：funded by the Gansu Provincial Science and Technology Program(22ZD6FA005);Gansu Postdoctoral Science Foundation(Grant number-E339880204)。

摘　　要：Recent climate dynamics denote patterns and variations in climatic conditions and associated cryospheric changes in the Pamir region,affecting downstream ecosystems and communities.The present investigation describes changes in Baralmos glacier and supraglacial lakes,along with related hazards,using meteorological observations,reanalysis products,and high-resolution satellite imagery from 2002 to 2022.Moreover,observations using Unmanned Aerial Vehicles(UAVs)were conducted between 2020 and 2022 to document recent variations.Reanalysis data suggested that there are no obvious trends in annual air temperature and precipitation except for a significant temperature rise in July(the warmest month)of about 1.34°C/decade(p<0.05)and precipitation decrease in December(p<0.05).During the last two decades of investigation,lake areas expanded from 20500 to 62800±21 m2,representing an approximately threefold increase,leading to increased mudflows in the Surkhob river and causing severe damage to property and infrastructures,most prominently during 2020 and 2022.The UAV data reveal an average decrease of-2.7±0.5 m in surface elevation downstream of Baralmos glacier between 2020 and 2022.This study is vital for implementing more intensive measures of the glacial environment and defining suitable mitigation strategies in the Pamir region.

关 键 词：GLACIER Glacier Lake Climate change Hazards PAMIR 

分 类 号：P343.6[天文地球—水文科学] P467[天文地球—地球物理学]