IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2015  > Vol12 No.5
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
Corresponding AuthorLI Jing
2015-09
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume12Issue:5Pages:1135-1144
Subtype期刊论文
AbstractThe 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.
KeywordPermafrost Characteristics National Highway No. 214 (G214) Eastern Qinghai-tibet Plateau Qinghai-tibet Plateau Temperature
DOI10.1007/s11629-014-3207-x
Indexed BySCI
Language英语
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10883
CollectionJournal of Mountain Science_Journal of Mountain Science-2015_Vol12 No.5
Recommended Citation
GB/T 7714
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.
APA SHENG Yu,CAO Yuan-bing,LI Jing,WU Ji-chun,CHEN Ji,&FENG Zi-liang.(2015).Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau.Journal of Mountain Science,12(5),1135-1144.
MLA SHENG Yu,et al."Characteristics of Permafrost along Highway G214 in the Eastern Qinghai-Tibet Plateau".Journal of Mountain Science 12.5(2015):1135-1144.
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