The Last Permafrost Maximum (LPM) map of the Northern Hemisphere:   permafrost extent and mean annual air temperatures, 25-17ka BP

doi:10.1111/bor.12070

CORC > 北京大学 > 城市与环境学院

	The Last Permafrost Maximum (LPM) map of the Northern Hemisphere: permafrost extent and mean annual air temperatures, 25-17ka BP
	Vandenberghe, Jef ; French, Hugh M. ; Gorbunov, Aldar ; Marchenko, Sergei ; Velichko, Andrey A. ; Jin, Huijun ; Cui, Zhijiu ; Zhang, Tingjun ; Wan, Xudong
刊名	boreas
	2014
关键词	SEA-ICE COVER LATE-PLEISTOCENE PERMAFROST GLACIAL MAXIMUM THERMAL-CONTRACTION NW EUROPE ATLANTIC CLIMATE CHINA SHEET PROXY
DOI	10.1111/bor.12070
英文摘要	This paper accompanies a map that shows the extent of permafrost in the Northern Hemisphere between 25 and 17 thousand years ago. The map is based upon existing archival data, common throughout the Northern Hemisphere, that include ice-wedge pseudomorphs, sand wedges and large cryoturbations. Where possible, a distinction is made between areas with continuous permafrost and areas where permafrost is either spatially discontinuous or sporadic. The associated mean annual palaeo-temperatures that are inferred on the basis of present-day analogues increase understanding of the possible changes in permafrost extent that might accompany current global warming trends. Areas with relict permafrost and areas that were formerly exposed due to lower sea level (submarine permafrost) are also mapped. Mapping is mostly limited to lowland regions (areas approximately <1000m a.s.l.). Striking features that appear from the map are (i) the narrow permafrost zone in North America, which contrasts with the broader LPM permafrost zone in Eurasia (that may be related to different snow thickness or vegetation cover), (ii) the zonal extent of former LPM permafrost (that may reflect sea-ice distribution), which contrasts with the present-day pattern of permafrost extent (especially in Eurasia) and (iii) the relatively narrow zones of LPM discontinuous permafrost (that may indicate strong temperature gradients).; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000337521200008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geography, Physical; Geosciences, Multidisciplinary; SCI(E); 38; REVIEW; jef.vandenberghe@vu.nl; 3; 652-666; 43
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/211154]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Vandenberghe, Jef,French, Hugh M.,Gorbunov, Aldar,et al. The Last Permafrost Maximum (LPM) map of the Northern Hemisphere: permafrost extent and mean annual air temperatures, 25-17ka BP[J]. boreas,2014.
APA	Vandenberghe, Jef.,French, Hugh M..,Gorbunov, Aldar.,Marchenko, Sergei.,Velichko, Andrey A..,...&Wan, Xudong.(2014).The Last Permafrost Maximum (LPM) map of the Northern Hemisphere: permafrost extent and mean annual air temperatures, 25-17ka BP.boreas.
MLA	Vandenberghe, Jef,et al."The Last Permafrost Maximum (LPM) map of the Northern Hemisphere: permafrost extent and mean annual air temperatures, 25-17ka BP".boreas (2014).