干旱区生态环境知识资源中心(Arid): Single-year thermal regime and inferred permafrost occurrence in the upper Ganglass catchment of the cold-arid Himalaya, Ladakh, India

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DOI	10.1016/j.scitotenv.2019.134631
	Single-year thermal regime and inferred permafrost occurrence in the upper Ganglass catchment of the cold-arid Himalaya, Ladakh, India
	Wani, John Mohd 1; Thayyen, Renoj J.2; Gruber, Stephan 3; Ojha, Chandra Shekhar Prasad 1,4; Stumme, Dorothea 5
通讯作者	Thayyen, Renoj J.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	703
英文摘要	Cold-arid regions of the trans-Himalaya in the Indian Himalayan Region (IHR) is suspected to have a significant area of permafrost. However, information on the ground thermal regime of these permafrost areas is so far not available. This study bridge this knowledge gap by analysing the sub-surface thermal regime of selected sites in the Ganglass catchment, Ladakh range. Near surface ground temperature data recorded during September 2016 to August 2017 using 24-miniature temperature data loggers distributed across 12 plots and covering an elevation range of 4700-5612 m a.s.l. are used in this study. Permafrost characteristics including plausible ranges of thermal offset, active-layer thickness and mean annual ground temperature at 10 m depth were estimated by driving a one-dimensional heat conduction model. Two statistical models were used to map first order estimates of permafrost area in this 15.4 km(2) catchment. Study suggest permafrost occurrence at all sites above 4900 m a.s.l. with active-layer thickness ranging from 0.1 to 4.2 m and the mean annual ground surface temperature ranging from between -10.0 and -0.85 degrees C for these sites. MAAT at these sites range from -4.1 to -8.9 degrees C and the surface offsets vary from -1.1 to 3.9 degrees C. Estimated thermal offset range from -0.9 to 0 degrees C. Both statistical models show comparable results and suggest 95% mean permafrost cover in the catchment above 4727 m a.s.l. These results strongly indicate existence of significant permafrost areas across the high elevations of the cold-arid regions of IHR. So far, permafrost processes are not considered for assessing present and future estimates of water and regional climate and as a causative factor for disasters like debris flows and landslides in the region. This study highlight the need for greater research efforts on Himalayan permafrost to have a comprehensive understanding of Himalayan cryosphere. Crown Copyright (C) 2019 Published by Elsevier B.V. All rights reserved.
英文关键词	Permafrost Active layer thickness Cold-arid Himalayas GEOtop model
类型	Article
语种	英语
国家	India ; Canada ; USA ; Nepal
收录类别	SCI-E
WOS记录号	WOS:000505924300165
WOS关键词	GROUND SURFACE-TEMPERATURE ; HIGH-ALTITUDE PERMAFROST ; QINGHAI-TIBET PLATEAU ; MOUNTAIN PERMAFROST ; ACTIVE-LAYER ; ROCK GLACIERS ; LAND-SURFACE ; SNOW COVER ; ENERGY FLUXES ; EUROPEAN ALPS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-02-10
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312843
作者单位	1.IIT, Dept Civil Engn, Roorkee 247667, Uttar Pradesh, India; 2.Natl Inst Hydrol, Water Resources Syst Div, Roorkee 247667, Uttar Pradesh, India; 3.Carleton Univ, Dept Geog & Environm Studies, Ottawa, ON, Canada; 4.Univ Missouri, Columbia, MO USA; 5.Int Ctr Integrated Mt Dev ICIMOD, Kathmandu, Nepal
推荐引用方式 GB/T 7714	Wani, John Mohd,Thayyen, Renoj J.,Gruber, Stephan,et al. Single-year thermal regime and inferred permafrost occurrence in the upper Ganglass catchment of the cold-arid Himalaya, Ladakh, India[J],2020,703.
APA	Wani, John Mohd,Thayyen, Renoj J.,Gruber, Stephan,Ojha, Chandra Shekhar Prasad,&Stumme, Dorothea.(2020).Single-year thermal regime and inferred permafrost occurrence in the upper Ganglass catchment of the cold-arid Himalaya, Ladakh, India.SCIENCE OF THE TOTAL ENVIRONMENT,703.
MLA	Wani, John Mohd,et al."Single-year thermal regime and inferred permafrost occurrence in the upper Ganglass catchment of the cold-arid Himalaya, Ladakh, India".SCIENCE OF THE TOTAL ENVIRONMENT 703(2020).