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Simulation of the Antarctic ice sheet with a three-dimensional polythermal ice-sheet model, in support of the EPICA project. II. Nested high-resolution treatment of Dronning Maud Land, Antarctica

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Title: Simulation of the Antarctic ice sheet with a three-dimensional polythermal ice-sheet model, in support of the EPICA project. II. Nested high-resolution treatment of Dronning Maud Land, Antarctica
Authors: Savvin, Alexey Browse this author
Greve, Ralf Browse this author →KAKEN DB
Calov, Reinhard Browse this author
Mügge, Bernd Browse this author
Hutter, Kolumban Browse this author
Keywords: Antarctic ice sheet
Dronning Maud Land
EPICA
Ice core
Simulation
Issue Date: Jan-2000
Publisher: International Glaciological Society
Journal Title: Annals of Glaciology
Volume: 30
Start Page: 69
End Page: 75
Publisher DOI: 10.3189/172756400781820831
Abstract: The modern dynamic and thermodynamic state of the entire Antarctic ice sheet is computed for a 242 200 year paleoclimatic simulation with the three-dimensional polythermal ice-sheet model SICOPOLIS. The simulation is driven by a climate history derived from the Vostok ice core and the SPECMAP sea-level record. In a 872 km x 436 km region in western Dronning Maud Land (DML), where a deep ice core is planned for EPICA, new high-resolution ice-thickness data are used to compute an improved bedrock topography and a locally refined numerical grid is applied which extends earlier work (Calov and others, 1998). The computed fields of basal temperature, age and shear deformation, together with the measured accumulation rates, give valuable information for the selection of a drill site suitable for obtaining a high-resolution climate record for the last glacial cycle. Based on these results, a possible drill site at 73° 59' S, 00° 00' E is discussed, for which the computed depth profiles of temperature, age, velocity and shear deformation are presented. The geographic origin of the ice column at this position extends 320 km upstream and therefore does not leave the DML region.
Rights: © 2000 International Glaciological Society
Relation: http://www.igsoc.org/
Type: article
URI: http://hdl.handle.net/2115/34636
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Greve Ralf

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