干旱区生态环境知识资源中心(Arid): Assessment of rock glaciers and their water storage in Guokalariju, Tibetan Plateau

Arid

DOI	10.5194/tc-18-1-2024
	Assessment of rock glaciers and their water storage in Guokalariju, Tibetan Plateau
	Li, Mengzhen; Yang, Yanmin; Peng, Zhaoyu; Liu, Gengnian
通讯作者	Liu, GN
来源期刊	CRYOSPHERE
ISSN	1994-0416
EISSN	1994-0424
出版年	2024
卷号	18 期号:1 页码:1-16
英文摘要	Rock glaciers are important hydrological reserves in arid and semi-arid regions. Their activity states can indicate the existence of permafrost. To help further explore the development mechanisms of rock glaciers in semi-arid and humid transition regions, this paper provides a detailed rock glacier inventory of the Guokalariju (also known as Goikarla Rigyu) area of the Tibetan Plateau (TP) using a manual visual interpretation of Google Earth Pro remote sensing imagery. We also estimated the water volume equivalent (WVEQ) in the study area for the first time. Approximately 5057 rock glaciers were identified, covering a total area of similar to 404.69 km 2 . Rock glaciers are unevenly distributed within the three sub-regions from west to east, with 80 % of them concentrated in the central region, where climatic and topographic conditions are most favorable. Under the same ground temperature conditions, increases in precipitation are conducive to rock glaciers forming at lower altitudes. Indeed, the lower limit of rock glaciers' mean altitude decreased eastward with increasing precipitation. Estimates of the water storage capacity of rock glaciers obtained by applying different methods varied considerably, but all showed the potential hydrological value of rock glaciers. The possible water storage in the subsurface ice of rock glacier permafrost was 1.32-3.60 km 3 . The ratio between the amount of subsurface ice stored in rock glaciers and surface ice stored in local glaciers falls within the range of 1 : 2.32 to 1 : 1.26 , with an average ratio of 1 : 1.69 . In the west region, where the climate is the driest, the water storage capacity of rock glaciers was estimated to be up to twice as large as that of the sub-region's glaciers. Changes in water resources and permafrost stability in the area where rock glaciers occur will have implications for regional water resource management, disaster prevention, and sustainable development strategies.
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001166573700001
WOS关键词	CLIMATIC SIGNIFICANCE ; ICE CONTENT ; DRY ANDES ; PERMAFROST DISTRIBUTION ; INTERNAL STRUCTURE ; PROTALUS RAMPARTS ; INVENTORY ; ALPS ; CREEP ; BASIN
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403273
推荐引用方式 GB/T 7714	Li, Mengzhen,Yang, Yanmin,Peng, Zhaoyu,et al. Assessment of rock glaciers and their water storage in Guokalariju, Tibetan Plateau[J],2024,18(1):1-16.
APA	Li, Mengzhen,Yang, Yanmin,Peng, Zhaoyu,&Liu, Gengnian.(2024).Assessment of rock glaciers and their water storage in Guokalariju, Tibetan Plateau.CRYOSPHERE,18(1),1-16.
MLA	Li, Mengzhen,et al."Assessment of rock glaciers and their water storage in Guokalariju, Tibetan Plateau".CRYOSPHERE 18.1(2024):1-16.