首页|Impact of glacier changes and permafrost distribution on debris flows in Badswat and Shishkat catchments,Northern Pakistan

Impact of glacier changes and permafrost distribution on debris flows in Badswat and Shishkat catchments,Northern Pakistan

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Knowledge of glacier changes and associated hazards is of great importance for the safety consideration of the population and infrastructure in the mountainous regions of Upper Indus Basin(UIB).In this study,we assessed the variations in glacier velocity,glacier surface elevation change,meteorological conditions,and permafrost distribution in Badswat and Shishkat catchments located in UIB to access the potential impact on the occurrence of debris flow in both catchments.We find that the glacier surface velocity increased during the debris flow event in the Badswat catchment and the mean daily temperature was 3.7℃ to 3.9℃ higher in most of the locations.The enhanced glacier surface elevation lowering period coincide with the rise in temperature during spring and autumn months between 2015 to 2019 in Badswat catchment.The source region of debris flow falls within the lower boundary of permafrost occurrence zone and lies below the 0℃ isotherm during late spring and summer months.In Shishkat catchment the o℃ isotherm reaches above the debris flow source area during August and the glacier do not show any significant variations in velocity and surface elevation change.The debris flow source area is adjacent to the slow-moving rock glacier in Shishkat catchment while in Badswat catchment the debris flow initiated from the former glacier moraine.Both catchments are largely glacierized and thus sensitive to changes in climatic conditions and changes in the cryosphere response possess significant threats to the population downstream.Continuous monitoring of cryosphere-climate change in the region can contribute toward the improvement of disaster risk reduction and mitigation policies.

Cryosphere changeClimate changeDebris flowRemote sensingPermafrostCryosphere hazard

HASSAN Wajid、SU Feng-huan、LIU Wei-ming、HASSAN Javed、HASSAN Muzammil、BAZAI Nazir Ahmed、WANG Hao、YANG Ze-wen、ALI Muzaffar、CASTELLANOS Daniel Garcia

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Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China

China-Pakistan Joint Research Center on Earth Sciences,CAS-HEC,Islamabad 45320,Pakistan

University of Chinese Academy of Sciences,Beijing 100049,China

DTU Space,Technical University of Denmark,Kongens Lyngby 2800,Denmark

Department of Environmental Science,Karakoram International University,Gilgit-Baltistan 15100,Pakistan

Key Laboratory of Mountain Hazards and Earth Surface Process,Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China

Instituto de Ciencias de la Tierra Jaume Almera,ICTJA-CSIC,Solé i Sabarís s/n,Barcelona 08028,Spain

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China-Pakistan Joint Research Center on Earth SciencesInstitute of Mountain Hazards and Environment-Chinese Academy of Sciences(IMHE-CAS)University of Chinese Academy of SciencesMaster research project supported by the Alliance of International Science Organizations(ANSO)Second Tibetan Plateau Scientific Expedition and Research Program(STEP)Second Tibetan Plateau Scientific Expedition and Research Program(STEP)National Natural Science Foundation of ChinaCAS President's International Fellowship InitiativeScience and Technology Research Program of Institute of Mountain Hazards and Environment,Chinese Academy of Sciences

2019QZKK09022019QZKK0903420710172021VEA0005IMHE-ZDRW-03

2023

10.1007/s11625-023-7894-5

山地科学学报(英文版)
中国科学院水利部成都山地灾害与环境研究所

山地科学学报(英文版)

CSTPCDCSCD
影响因子：0.228
ISSN：1672-6316
年,卷(期)：2023.20(12)
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