Deglaciation of Fennoscandia
To provide a new reconstruction of the deglaciation of the Fennoscandian Ice Sheet, in the form of calendar-year time-slices, which are particularly useful for ice sheet modelling, we have compiled and synthesized published geomorphological data for eskers, ice-marginal formations, lineations, margi...
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Format: | Article in Journal/Newspaper |
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Online Access: | http://eprints.gla.ac.uk/110413/ http://eprints.gla.ac.uk/110413/1/110413.pdf |
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ftuglasgow:oai:eprints.gla.ac.uk:110413 2023-05-15T16:12:20+02:00 Deglaciation of Fennoscandia Stroeven, Arjen P. Hättestrand, Clas Kleman, Johan Heyman, Jakob Fabel, Derek Fredin, Ola Goodfellow, Bradley W. Harbor, Jonathan M. Jansen, John D. Olsen, Lars Caffee, Marc W. Fink, David Lundqvist, Jan Rosqvist, Gunhild C. Strömberg, Bo Jansson, Krister N. 2015 text http://eprints.gla.ac.uk/110413/ http://eprints.gla.ac.uk/110413/1/110413.pdf en eng Elsevier http://eprints.gla.ac.uk/110413/1/110413.pdf Stroeven, A. P. et al. (2015) Deglaciation of Fennoscandia. Quaternary Science Reviews <http://eprints.gla.ac.uk/view/journal_volume/Quaternary_Science_Reviews.html>, 147, pp. 91-121. (doi:10.1016/j.quascirev.2015.09.016 <http://dx.doi.org/10.1016/j.quascirev.2015.09.016>) cc_by_nc_nd_4 CC-BY-NC-ND Articles PeerReviewed 2015 ftuglasgow https://doi.org/10.1016/j.quascirev.2015.09.016 2020-05-28T22:10:39Z To provide a new reconstruction of the deglaciation of the Fennoscandian Ice Sheet, in the form of calendar-year time-slices, which are particularly useful for ice sheet modelling, we have compiled and synthesized published geomorphological data for eskers, ice-marginal formations, lineations, marginal meltwater channels, striae, ice-dammed lakes, and geochronological data from radiocarbon, varve, optically-stimulated luminescence, and cosmogenic nuclide dating. This 25 is summarized as a deglaciation map of the Fennoscandian Ice Sheet with isochrons marking every 1000 years between 22 and 13 cal kyr BP and every hundred years between 11.6 and final ice decay after 9.7 cal kyr BP. Deglaciation patterns vary across the Fennoscandian Ice Sheet domain, reflecting differences in climatic and geomorphic settings as well as ice sheet basal thermal conditions and terrestrial versus marine margins. For example, the ice sheet margin in the high-precipitation coastal setting of the western sector responded sensitively to climatic variations leaving a detailed record of prominent moraines and ice-marginal deposits in many fjords and coastal valleys. Retreat rates across the southern sector differed between slow retreat of the terrestrial margin in western and southern Sweden and rapid retreat of the calving ice margin in the Baltic Basin. Our reconstruction is consistent with much of the published research. However, the synthesis of a large amount of existing and new data support refined reconstructions in some areas. For example, we locate the LGM extent of the ice sheet in northwestern Russia further east than previously suggested and conclude that it occurred at a later time than the rest of the ice sheet, at around 17-15 cal kyr BP, and propose a slightly different chronology of moraine formation over southern Sweden based on improved correlations of moraine segments using new LiDAR data and tying the timing of moraine formation to Greenland ice core cold stages. Retreat rates vary by as much as an order of magnitude in different sectors of the ice sheet, with the lowest rates on the high-elevation and maritime Norwegian margin. Retreat rates compared to the climatic information provided by the Greenland ice core record show a general correspondence between retreat rate and climatic forcing, although a close match between retreat rate and climate is unlikely because of other controls, such as topography and marine versus terrestrial margins. Overall, the time slice reconstructions of Fennoscandian Ice Sheet deglaciation from 22 to 9.7 cal kyr BP provide an important dataset for understanding the contexts that underpin spatial and temporal patterns in retreat of the Fennoscandian Ice Sheet, and are an important resource for testing and refining ice sheet models. Article in Journal/Newspaper Fennoscandia Fennoscandian Greenland Greenland ice core ice core Ice Sheet University of Glasgow: Enlighten - Publications Greenland Quaternary Science Reviews 147 91 121 |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
description |
To provide a new reconstruction of the deglaciation of the Fennoscandian Ice Sheet, in the form of calendar-year time-slices, which are particularly useful for ice sheet modelling, we have compiled and synthesized published geomorphological data for eskers, ice-marginal formations, lineations, marginal meltwater channels, striae, ice-dammed lakes, and geochronological data from radiocarbon, varve, optically-stimulated luminescence, and cosmogenic nuclide dating. This 25 is summarized as a deglaciation map of the Fennoscandian Ice Sheet with isochrons marking every 1000 years between 22 and 13 cal kyr BP and every hundred years between 11.6 and final ice decay after 9.7 cal kyr BP. Deglaciation patterns vary across the Fennoscandian Ice Sheet domain, reflecting differences in climatic and geomorphic settings as well as ice sheet basal thermal conditions and terrestrial versus marine margins. For example, the ice sheet margin in the high-precipitation coastal setting of the western sector responded sensitively to climatic variations leaving a detailed record of prominent moraines and ice-marginal deposits in many fjords and coastal valleys. Retreat rates across the southern sector differed between slow retreat of the terrestrial margin in western and southern Sweden and rapid retreat of the calving ice margin in the Baltic Basin. Our reconstruction is consistent with much of the published research. However, the synthesis of a large amount of existing and new data support refined reconstructions in some areas. For example, we locate the LGM extent of the ice sheet in northwestern Russia further east than previously suggested and conclude that it occurred at a later time than the rest of the ice sheet, at around 17-15 cal kyr BP, and propose a slightly different chronology of moraine formation over southern Sweden based on improved correlations of moraine segments using new LiDAR data and tying the timing of moraine formation to Greenland ice core cold stages. Retreat rates vary by as much as an order of magnitude in different sectors of the ice sheet, with the lowest rates on the high-elevation and maritime Norwegian margin. Retreat rates compared to the climatic information provided by the Greenland ice core record show a general correspondence between retreat rate and climatic forcing, although a close match between retreat rate and climate is unlikely because of other controls, such as topography and marine versus terrestrial margins. Overall, the time slice reconstructions of Fennoscandian Ice Sheet deglaciation from 22 to 9.7 cal kyr BP provide an important dataset for understanding the contexts that underpin spatial and temporal patterns in retreat of the Fennoscandian Ice Sheet, and are an important resource for testing and refining ice sheet models. |
format |
Article in Journal/Newspaper |
author |
Stroeven, Arjen P. Hättestrand, Clas Kleman, Johan Heyman, Jakob Fabel, Derek Fredin, Ola Goodfellow, Bradley W. Harbor, Jonathan M. Jansen, John D. Olsen, Lars Caffee, Marc W. Fink, David Lundqvist, Jan Rosqvist, Gunhild C. Strömberg, Bo Jansson, Krister N. |
spellingShingle |
Stroeven, Arjen P. Hättestrand, Clas Kleman, Johan Heyman, Jakob Fabel, Derek Fredin, Ola Goodfellow, Bradley W. Harbor, Jonathan M. Jansen, John D. Olsen, Lars Caffee, Marc W. Fink, David Lundqvist, Jan Rosqvist, Gunhild C. Strömberg, Bo Jansson, Krister N. Deglaciation of Fennoscandia |
author_facet |
Stroeven, Arjen P. Hättestrand, Clas Kleman, Johan Heyman, Jakob Fabel, Derek Fredin, Ola Goodfellow, Bradley W. Harbor, Jonathan M. Jansen, John D. Olsen, Lars Caffee, Marc W. Fink, David Lundqvist, Jan Rosqvist, Gunhild C. Strömberg, Bo Jansson, Krister N. |
author_sort |
Stroeven, Arjen P. |
title |
Deglaciation of Fennoscandia |
title_short |
Deglaciation of Fennoscandia |
title_full |
Deglaciation of Fennoscandia |
title_fullStr |
Deglaciation of Fennoscandia |
title_full_unstemmed |
Deglaciation of Fennoscandia |
title_sort |
deglaciation of fennoscandia |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://eprints.gla.ac.uk/110413/ http://eprints.gla.ac.uk/110413/1/110413.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Fennoscandia Fennoscandian Greenland Greenland ice core ice core Ice Sheet |
genre_facet |
Fennoscandia Fennoscandian Greenland Greenland ice core ice core Ice Sheet |
op_relation |
http://eprints.gla.ac.uk/110413/1/110413.pdf Stroeven, A. P. et al. (2015) Deglaciation of Fennoscandia. Quaternary Science Reviews <http://eprints.gla.ac.uk/view/journal_volume/Quaternary_Science_Reviews.html>, 147, pp. 91-121. (doi:10.1016/j.quascirev.2015.09.016 <http://dx.doi.org/10.1016/j.quascirev.2015.09.016>) |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.quascirev.2015.09.016 |
container_title |
Quaternary Science Reviews |
container_volume |
147 |
container_start_page |
91 |
op_container_end_page |
121 |
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1765997628116434944 |