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Arctic Ocean glacial history
Vise andre og tillknytning
Ansvarlig organisasjon
2014 (engelsk)Inngår i: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 92, nr SI, s. 40-67Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

While there are numerous hypotheses concerning glacial interglacial environmental and climatic regime shifts in the Arctic Ocean, a holistic view on the Northern Hemisphere’s late Quaternary ice-sheet extent and their impact on ocean and sea-ice dynamics remains to be established. Here we aim to provide a step in this direction by presenting an overview of Arctic Ocean glacial history, based on the present state-of-the-art knowledge gained from field work and chronological studies, and with a specific focus on ice-sheet extent and environmental conditions during the Last Glacial Maximum (LGM). The maximum Quaternary extension of ice sheets is discussed and compared to LGM. We bring together recent results from the circum-Arctic continental margins and the deep central basin; extent of ice sheets and ice streams bordering the Arctic Ocean as well as evidence for ice shelves extending into the central deep basin. Discrepancies between new results and published LGM ice-sheet reconstructions in the high Arctic are highlighted and outstanding questions are identified. Finally, we address the ability to simulate the Arctic Ocean ice sheet complexes and their dynamics, including ice streams and ice shelves, using presently available ice-sheet models. Our review shows that while we are able to firmly reject some of the earlier hypotheses formulated to describe Arctic Ocean glacial conditions, we still lack information from key areas to compile the holistic Arctic Ocean glacial history. (C) 2013 The Authors. Published by Elsevier Ltd.

sted, utgiver, år, opplag, sider
2014. Vol. 92, nr SI, s. 40-67
Emneord [en]
Quaternary; Arctic Ocean; Ice sheets; Ice shelves; Ice streams; Landforms; Glacial history; Last Glacial Maximum; Ice sheet modelling; Paleoceanography
HSV kategori
Forskningsprogram
SWEDARCTIC 2010, Tajmyr 2010; SWEDARCTIC 2012, Tajmyr 2012; SWEDARCTIC 2003, Sibirien 2003; SWEDARCTIC 2002, Sibirien 2002; SWEDARCTIC 1999, Tajmyr 1999; SWEDARCTIC 1998, Tajmyr 1998; SWEDARCTIC 2007, LOMROG; SWEDARCTIC 2009, LOMROG II
Identifikatorer
URN: urn:nbn:se:polar:diva-2948DOI: 10.1016/j.quascirev.2013.07.033OAI: oai:DiVA.org:polar-2948DiVA, id: diva2:1045132
Tilgjengelig fra: 2016-11-08 Laget: 2016-10-27 Sist oppdatert: 2017-11-29

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