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The periglacial climate andenvironment in northern Eurasia during the Last Glaciation
Vise andre og tillknytning
Ansvarlig organisasjon
2004 (engelsk)Inngår i: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 23, s. 1333-1357Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper summarizes the results of studies of the Late Weichselian periglacial environments carried out in key areas of northern Eurasia by several QUEEN teams (European Science Foundation (ESF) programme: ‘‘Quaternary Environment of the Eurasian North’’). The palaeoglaciological boundary conditions are defined by geological data on timing and extent of the last glaciation obtained in the course of the EU funded project ‘‘Eurasian Ice Sheets’’. These data prove beyond any doubt, that with the exception of the northwestern fringe of the Taymyr Peninsula, the rest of the Eurasian mainlandand Severnaya Zemlya were not affectedby the Barents–Kara Sea Ice Sheet during the Last Glacial Maximum (LGM). Inversedmod elling basedon these results shows that a progressive cooling which startedaround30 ka BP, causedice growth in Scandinavia and the northwestern areas of the Barents–Kara Sea shelf, due to a maritime climate with relatively high precipitation along the western flank of the developing ice sheets. In the rest of the Eurasian Arctic extremely low precipitation rates (less than 50mmyr 1), did not allow ice sheet growth in spite of the very cold temperatures. Palaeoclimatic and palaeoenvironmental conditions for the time prior to, during, and after the LGM have been reconstructed for the non-glaciated areas around the LGM ice sheet with the use of faunal and vegetation records, permafrost, eolian sediments, alluvial deposits and other evidences. The changing environment, from interstadial conditions around 30 ka BP to a much colder and drier environment at the culmination of the LGM at 20–15 ka BP, andthe beginning of warming around15 ka BP have been elaboratedfrom the fieldd ata, which fits well with the modelling results.

sted, utgiver, år, opplag, sider
2004. Vol. 23, s. 1333-1357
Emneord [en]
SWEDARCTIC 1996, SWEDARCTIC 1997, SWEDARCTIC 1999
Forskningsprogram
SWEDARCTIC 1998, Tajmyr 1998; SWEDARCTIC 1999, Tajmyr 1999
Identifikatorer
URN: urn:nbn:se:polar:diva-774DOI: 10.1016/j.quascirev.2003.12.012OAI: oai:DiVA.org:polar-774DiVA, id: diva2:568908
Merknad

Source: Polardok by Swedish Polar Research Secretariat

Tilgjengelig fra: 2012-11-15 Laget: 2012-11-15 Sist oppdatert: 2017-12-07

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