Kurt Lambeck (e-mail: Kurt.Lambeck@anu.edu.au) and Anthony Purcell (e-mail: firstname.lastname@example.org), Research School of Earth Sciences, Australian National University, Canberra ACT 0200, Australia; Jason Zhao (e-mail: email@example.com), Geoscience Australia, GPO Box 378, Canberra ACT 2601, Australia; Nils-Olof Svensson (e-mail: firstname.lastname@example.org), GeoBiosphere Science Centre, Lund University, 223 62 Lund, Sweden
The Scandinavian Ice Sheet: from MIS 4 to the end of the Last Glacial Maximum
Article first published online: 25 FEB 2010
© 2010 The Authors. Journal compilation © 2010 The Boreas Collegium
Volume 39, Issue 2, pages 410–435, April 2010
How to Cite
LAMBECK, K., PURCELL, A., ZHAO, J. and SVENSSON, N.-O. (2010), The Scandinavian Ice Sheet: from MIS 4 to the end of the Last Glacial Maximum. Boreas, 39: 410–435. doi: 10.1111/j.1502-3885.2010.00140.x
- Issue published online: 25 FEB 2010
- Article first published online: 25 FEB 2010
- received 17th April 2009, accepted 4th December 2009.
Lambeck, K., Purcell, A., Zhao, J. & Svensson, N-O. 2010 (April): The Scandinavian Ice Sheet: from MIS 4 to the end of the Last Glacial Maximum. Boreas, Vol. 39, pp. 410–435. 10.1111/j.1502-3885.2010.00140.x. ISSN 0300-9483.
Glacial rebound modelling, to establish constraints on past ice sheets from the observational evidence of palaeo-shoreline elevations, is well established for the post- Last Glacial Maximum (post-LGM) period, for which the observational evidence is relatively abundant and well distributed spatially and in time. This is particularly the case for Scandinavia. For the earlier part of the glacial cycle this evidence becomes increasingly sparse and uncertain such that, with the exception of the Eemian period, there are very few, if any, direct sea-level indicators that constrain any part of the Scandinavian Ice Sheet evolution before the LGM. Instead, we assume that ice-sheet basal conditions during Marine Isotope Stage 3 (MIS 3) are the same as those for the LGM, focus on establishing these conditions from the rebound analysis for the LGM and Lateglacial period, and then extrapolate to the earlier period using observationally constrained locations of the ice margins. The glacial rebound modelling and inversion follow previously established formulations, with the exception that the effects of water loading from proglacial lakes that form within the Baltic Basin and elsewhere have been included. The data set for the inversion of the sea- and lake-level data has been extended to include marine-limit data in order to extend the observational record further back in time. The result is a sequence of time slices for the Scandinavian Ice Sheet from the time of MIS 4 to the Lateglacial that are characterized by frozen basal conditions until late in the LGM interval when rapid thinning occurred in the eastern and southern sectors of the ice sheet. The primary function of these models is as an interpolator between the fragmentary observational constraints and to produce quantitative models for the glaciation history with predictive capabilities, for example regarding the evolution of the Baltic Basin.