气候变化领域集成服务门户(CCPortal): Conditions of ground seasonal thawing and freezing in South Yakutia

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	Conditions of ground seasonal thawing and freezing in South Yakutia
	Zabolotnik S.I.; Zabolotnik P.S.
发表日期	2014
ISSN	15607496
卷号	18 期号:1
英文摘要	Evaluation of geocryological conditions in South Yakutia and analysis of factors controlling the development of seasonally thawing and seasonally freezing layers have been accomplished. Seasonal thaw depths have been computed for four soil types: relatively dry and saturated sands with moisture contents of 5 and 25 % and silty loams with moisture contents of 20 and 45 %, respectively. The relationships of seasonal thaw depth and latitude/altitude have been revealed. It has been established that the increase in altitude by 1000 m causes a decrease in the depth of seasonal thaw by 0.56-0.68 m in silty loams and by 0.85-1.28 in sands. On the contrary, towards southward, the thaw depths increases per each degree of latitude by 0.064-0.078 m in silty loams and by 0.097-0.143 m in sands. The altitudinal position of the snow line, above which soils never thaw, has been estimated. The regime and the rate of seasonal thawing and freezing in permafrost areas and in taliks have been obtained. The rates of seasonal soil thawing are given for different altitudes.
英文关键词	Permafrost; Seasonal thawing and seasonal freezing of soils; Taliks
学科领域	freezing; moisture content; permafrost; sand; silty loam; talik; thawing; Russian Federation; Sakha
语种	英语
scopus关键词	freezing; moisture content; permafrost; sand; silty loam; talik; thawing; Russian Federation; Sakha
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120205
作者单位	Melnikov Permafrost Institute, SB RAS, Merzlotnaya Str., 36, Yakutsk, 677010, Russian Federation
推荐引用方式 GB/T 7714	Zabolotnik S.I.,Zabolotnik P.S.. Conditions of ground seasonal thawing and freezing in South Yakutia[J],2014,18(1).
APA	Zabolotnik S.I.,&Zabolotnik P.S..(2014).Conditions of ground seasonal thawing and freezing in South Yakutia.Earth's Cryosphere,18(1).
MLA	Zabolotnik S.I.,et al."Conditions of ground seasonal thawing and freezing in South Yakutia".Earth's Cryosphere 18.1(2014).