Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau
The characteristics of the permafrost along National Highway No. 214 (G214) in Qinghai province (between kilometer markers K310 and K670), including the distribution patterns of permafrost and seasonally frozen ground (SFG), ground ice content and mean annual ground temperature (MAGT), were analyzed...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/10883 2023-05-15T16:36:45+02:00 Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau SHENG Yu CAO Yuan-bing LI Jing WU Ji-chun CHEN Ji FENG Zi-liang 2015-09 http://ir.imde.ac.cn/handle/131551/10883 https://doi.org/10.1007/s11629-014-3207-x 英语 eng Journal of Mountain Science SHENG Yu,CAO Yuan-bing,LI Jing,et al. Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau[J]. Journal of Mountain Science,2015,12(5):1135-1144. http://ir.imde.ac.cn/handle/131551/10883 doi:10.1007/s11629-014-3207-x cn.org.cspace.api.content.CopyrightPolicy@110de07 Permafrost Characteristics National Highway No. 214 (G214) Eastern Qinghai-tibet Plateau Qinghai-tibet Plateau Temperature 期刊论文 2015 ftchinacadscimhe https://doi.org/10.1007/s11629-014-3207-x 2022-12-19T18:19:20Z The characteristics of the permafrost along National Highway No. 214 (G214) in Qinghai province (between kilometer markers K310 and K670), including the distribution patterns of permafrost and seasonally frozen ground (SFG), ground ice content and mean annual ground temperature (MAGT), were analyzed using a large quantity of drilling and measured ground temperature data. Three topographic units can be distinguished along the highway: the northern mountains, including Ela Mountain and Longstone Mountain; the medial alluvial plain and the southern Bayan Har Mountains. The horizontal distribution patterns of permafrost can be divided into four sections, from north to south: the northern continuous permafrost zone (K310-K460), the island permafrost zone (K460-K560), the southern continuous permafrost zone (K560-K630), and the discontinuous permafrost zone (K630-K670). Vertically, the permafrost lower limits (PLLs) of the discontinuous zone were 4200/4325 m, 4230/4350 m, and 4350/4450 m on the north-facing/south-facing slopes of Ela Mountain, Longstone Mountain and Bayan Har Mountains, respectively. The permafrost was generally warm, with MAGTs between -1.0°C and 0°C in the northern continuous permafrost zone, approximately -0.5°C in the island permafrost zone, between -1.5°C and 0°C in the southern continuous permafrost zone, and higher than -0.5°C in the discontinuous permafrost zone. In contrast, the spatial variations in ground ice content were mainly controlled by the local soil water content and lithology. The relationships between the mean annual air temperature (MAAT) and the PLLs indicated that the PLLs varied between -3.3°C and -4.1°C for the northern Ela and Longstone Mountains and between -4.1°C and -4.6°C in the southern Bayan Har Mountains. Report Ice permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Ela ENVELOPE(9.642,9.642,63.170,63.170) Journal of Mountain Science 12 5 1135 1144 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Permafrost Characteristics National Highway No. 214 (G214) Eastern Qinghai-tibet Plateau Qinghai-tibet Plateau Temperature |
spellingShingle |
Permafrost Characteristics National Highway No. 214 (G214) Eastern Qinghai-tibet Plateau Qinghai-tibet Plateau Temperature SHENG Yu CAO Yuan-bing LI Jing WU Ji-chun CHEN Ji FENG Zi-liang Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau |
topic_facet |
Permafrost Characteristics National Highway No. 214 (G214) Eastern Qinghai-tibet Plateau Qinghai-tibet Plateau Temperature |
description |
The characteristics of the permafrost along National Highway No. 214 (G214) in Qinghai province (between kilometer markers K310 and K670), including the distribution patterns of permafrost and seasonally frozen ground (SFG), ground ice content and mean annual ground temperature (MAGT), were analyzed using a large quantity of drilling and measured ground temperature data. Three topographic units can be distinguished along the highway: the northern mountains, including Ela Mountain and Longstone Mountain; the medial alluvial plain and the southern Bayan Har Mountains. The horizontal distribution patterns of permafrost can be divided into four sections, from north to south: the northern continuous permafrost zone (K310-K460), the island permafrost zone (K460-K560), the southern continuous permafrost zone (K560-K630), and the discontinuous permafrost zone (K630-K670). Vertically, the permafrost lower limits (PLLs) of the discontinuous zone were 4200/4325 m, 4230/4350 m, and 4350/4450 m on the north-facing/south-facing slopes of Ela Mountain, Longstone Mountain and Bayan Har Mountains, respectively. The permafrost was generally warm, with MAGTs between -1.0°C and 0°C in the northern continuous permafrost zone, approximately -0.5°C in the island permafrost zone, between -1.5°C and 0°C in the southern continuous permafrost zone, and higher than -0.5°C in the discontinuous permafrost zone. In contrast, the spatial variations in ground ice content were mainly controlled by the local soil water content and lithology. The relationships between the mean annual air temperature (MAAT) and the PLLs indicated that the PLLs varied between -3.3°C and -4.1°C for the northern Ela and Longstone Mountains and between -4.1°C and -4.6°C in the southern Bayan Har Mountains. |
format |
Report |
author |
SHENG Yu CAO Yuan-bing LI Jing WU Ji-chun CHEN Ji FENG Zi-liang |
author_facet |
SHENG Yu CAO Yuan-bing LI Jing WU Ji-chun CHEN Ji FENG Zi-liang |
author_sort |
SHENG Yu |
title |
Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau |
title_short |
Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau |
title_full |
Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau |
title_fullStr |
Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau |
title_full_unstemmed |
Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau |
title_sort |
characteristics of permafrost along highway g214 in the eastern qinghai-tibet plateau |
publishDate |
2015 |
url |
http://ir.imde.ac.cn/handle/131551/10883 https://doi.org/10.1007/s11629-014-3207-x |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) |
geographic |
Ela |
geographic_facet |
Ela |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
Journal of Mountain Science SHENG Yu,CAO Yuan-bing,LI Jing,et al. Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau[J]. Journal of Mountain Science,2015,12(5):1135-1144. http://ir.imde.ac.cn/handle/131551/10883 doi:10.1007/s11629-014-3207-x |
op_rights |
cn.org.cspace.api.content.CopyrightPolicy@110de07 |
op_doi |
https://doi.org/10.1007/s11629-014-3207-x |
container_title |
Journal of Mountain Science |
container_volume |
12 |
container_issue |
5 |
container_start_page |
1135 |
op_container_end_page |
1144 |
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1766027077108105216 |