干旱区生态环境知识资源中心(Arid): Improved prediction of the vertical distribution of ground ice in Arctic-Antarctic permafrost sediments

Arid

DOI	10.1038/s43247-022-00367-z
	Improved prediction of the vertical distribution of ground ice in Arctic-Antarctic permafrost sediments
	Lacelle, Denis; Fisher, David A.; Verret, Marjolaine; Pollard, Wayne
通讯作者	Lacelle, D (corresponding author)，Univ Ottawa, Dept Geog Environm & Geomat, Ottawa, ON K1N 6N5, Canada.
来源期刊	COMMUNICATIONS EARTH & ENVIRONMENT
EISSN	2662-4435
出版年	2022
卷号	3 期号:1
英文摘要	Frost susceptibility of permafrost sediments is strongly influenced by unfrozen water content, which is dependent on sediment type, soil water chemistry, and temperature, according to field observations and ensemble modeling prediction of ground ice formation in Arctic-Antarctic sediments. Global warming and permafrost degradation are impacting landscapes, ecosystems and the climate-carbon system. Current ground ice and geohazard maps rely on the frost susceptibility of surficial sediments, and substantial areas underestimate ice abundance. Here we use a soil environmental model to show the importance of considering unfrozen water content (dependent on sediment type, soil water chemistry, and temperature) when assessing the frost susceptibility of sediments. Our ensemble modeling of the vertical structure and evolution of ground ice for fine to coarse-grained sediments matches reasonably well with field measurements at sites from the low Arctic to the cold and hyper-arid Dry Valleys of Antarctica. Our modeling indicates a need to re-evaluate how frost-susceptible sediments are identified when mapping ice-rich permafrost landscapes and provides a framework for the development of quantitative estimates of the vertical distribution of ground ice in permafrost sediments at regional scale.
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:000757425800001
WOS关键词	MCMURDO DRY VALLEYS ; ACTIVE-LAYER ; SURFACE-TEMPERATURE ; UNIVERSITY VALLEY ; CLIMATE-CHANGE ; BEACON VALLEY ; THERMAL STATE ; FREEZE-THAW ; SOIL ; WATER
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376284
作者单位	[Lacelle, Denis] Univ Ottawa, Dept Geog Environm & Geomat, Ottawa, ON K1N 6N5, Canada; [Fisher, David A.] Univ Ottawa, Dept Earth Sci, Ottawa, ON, Canada; [Verret, Marjolaine] Victoria Univ Wellington, Antarctic Res Ctr, Wellington 6011, New Zealand; [Pollard, Wayne] McGill Univ, Dept Geog, Montreal, PQ H3A 0G4, Canada
推荐引用方式 GB/T 7714	Lacelle, Denis,Fisher, David A.,Verret, Marjolaine,et al. Improved prediction of the vertical distribution of ground ice in Arctic-Antarctic permafrost sediments[J],2022,3(1).
APA	Lacelle, Denis,Fisher, David A.,Verret, Marjolaine,&Pollard, Wayne.(2022).Improved prediction of the vertical distribution of ground ice in Arctic-Antarctic permafrost sediments.COMMUNICATIONS EARTH & ENVIRONMENT,3(1).
MLA	Lacelle, Denis,et al."Improved prediction of the vertical distribution of ground ice in Arctic-Antarctic permafrost sediments".COMMUNICATIONS EARTH & ENVIRONMENT 3.1(2022).