The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction
We present a new time-slice reconstruction of the Eurasian ice sheets (British–Irish, Svalbard–Barents–Kara Seas and Scandinavian) documenting the spatial evolution of these interconnected ice sheets every 1000 years from 25 to 10 ka, and at four selected time periods back to 40 ka. The time-slice m...
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Online Access: | https://hdl.handle.net/1956/11200 https://doi.org/10.1111/bor.12142 |
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ftunivbergen:oai:bora.uib.no:1956/11200 2023-05-15T16:40:11+02:00 The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction Hughes, Anna L.C. Gyllencreutz, Richard Lohne, Øystein Strand Mangerud, Jan Svendsen, John-Inge 2016-02-04T14:16:34Z application/pdf https://hdl.handle.net/1956/11200 https://doi.org/10.1111/bor.12142 eng eng John Wiley & Sons Ltd on behalf of The Boreas Collegium urn:issn:1502-3885 https://hdl.handle.net/1956/11200 https://doi.org/10.1111/bor.12142 cristin:1317628 Boreas 2016, 45(1):1-45 Attribution CC BY 4.0 http://creativecommons.org/licenses/by/4.0 Copyright 2015 The Authors 1-45 45 1 Eurasian ice sheets DATED-1 VDP::Matematikk og Naturvitenskap: 400 Peer reviewed Journal article 2016 ftunivbergen https://doi.org/10.1111/bor.12142 2023-03-14T17:39:13Z We present a new time-slice reconstruction of the Eurasian ice sheets (British–Irish, Svalbard–Barents–Kara Seas and Scandinavian) documenting the spatial evolution of these interconnected ice sheets every 1000 years from 25 to 10 ka, and at four selected time periods back to 40 ka. The time-slice maps of ice-sheet extent are based on a new Geographical Information System (GIS) database, where we have collected published numerical dates constraining the timing of ice-sheet advance and retreat, and additionally geomorphological and geological evidence contained within the existing literature. We integrate all uncertainty estimates into three ice-margin lines for each time-slice; a most-credible line, derived from our assessment of all available evidence, with bounding maximum and minimum limits allowed by existing data. This approach was motivated by the demands of glaciological, isostatic and climate modelling and to clearly display limitations in knowledge. The timing of advance and retreat were both remarkably spatially variable across the ice-sheet area. According to our compilation the westernmost limit along the British–Irish and Norwegian continental shelf was reached up to 7000 years earlier (at c. 27–26 ka) than the eastern limit on the Russian Plain (at c. 20–19 ka). The Eurasian ice sheet complex as a whole attained its maximum extent (5.5 Mkm2) and volume (~24 m Sea Level Equivalent) at c. 21 ka. Our continental-scale approach highlights instances of conflicting evidence and gaps in the ice-sheet chronology where uncertainties remain large and should be a focus for future research. Largest uncertainties coincide with locations presently below sea level and where contradicting evidence exists. This first version of the database and time-slices (DATED-1) has a census date of 1 January 2013 and both are available to download via the Bjerknes Climate Data Centre and PANGAEA. publishedVersion Article in Journal/Newspaper Ice Sheet Svalbard University of Bergen: Bergen Open Research Archive (BORA-UiB) Svalbard Boreas 45 1 1 45 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
Eurasian ice sheets DATED-1 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
Eurasian ice sheets DATED-1 VDP::Matematikk og Naturvitenskap: 400 Hughes, Anna L.C. Gyllencreutz, Richard Lohne, Øystein Strand Mangerud, Jan Svendsen, John-Inge The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction |
topic_facet |
Eurasian ice sheets DATED-1 VDP::Matematikk og Naturvitenskap: 400 |
description |
We present a new time-slice reconstruction of the Eurasian ice sheets (British–Irish, Svalbard–Barents–Kara Seas and Scandinavian) documenting the spatial evolution of these interconnected ice sheets every 1000 years from 25 to 10 ka, and at four selected time periods back to 40 ka. The time-slice maps of ice-sheet extent are based on a new Geographical Information System (GIS) database, where we have collected published numerical dates constraining the timing of ice-sheet advance and retreat, and additionally geomorphological and geological evidence contained within the existing literature. We integrate all uncertainty estimates into three ice-margin lines for each time-slice; a most-credible line, derived from our assessment of all available evidence, with bounding maximum and minimum limits allowed by existing data. This approach was motivated by the demands of glaciological, isostatic and climate modelling and to clearly display limitations in knowledge. The timing of advance and retreat were both remarkably spatially variable across the ice-sheet area. According to our compilation the westernmost limit along the British–Irish and Norwegian continental shelf was reached up to 7000 years earlier (at c. 27–26 ka) than the eastern limit on the Russian Plain (at c. 20–19 ka). The Eurasian ice sheet complex as a whole attained its maximum extent (5.5 Mkm2) and volume (~24 m Sea Level Equivalent) at c. 21 ka. Our continental-scale approach highlights instances of conflicting evidence and gaps in the ice-sheet chronology where uncertainties remain large and should be a focus for future research. Largest uncertainties coincide with locations presently below sea level and where contradicting evidence exists. This first version of the database and time-slices (DATED-1) has a census date of 1 January 2013 and both are available to download via the Bjerknes Climate Data Centre and PANGAEA. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hughes, Anna L.C. Gyllencreutz, Richard Lohne, Øystein Strand Mangerud, Jan Svendsen, John-Inge |
author_facet |
Hughes, Anna L.C. Gyllencreutz, Richard Lohne, Øystein Strand Mangerud, Jan Svendsen, John-Inge |
author_sort |
Hughes, Anna L.C. |
title |
The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction |
title_short |
The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction |
title_full |
The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction |
title_fullStr |
The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction |
title_full_unstemmed |
The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction |
title_sort |
last eurasian ice sheets - a chronological database and time-slice reconstruction |
publisher |
John Wiley & Sons Ltd on behalf of The Boreas Collegium |
publishDate |
2016 |
url |
https://hdl.handle.net/1956/11200 https://doi.org/10.1111/bor.12142 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Ice Sheet Svalbard |
genre_facet |
Ice Sheet Svalbard |
op_source |
1-45 45 1 |
op_relation |
urn:issn:1502-3885 https://hdl.handle.net/1956/11200 https://doi.org/10.1111/bor.12142 cristin:1317628 Boreas 2016, 45(1):1-45 |
op_rights |
Attribution CC BY 4.0 http://creativecommons.org/licenses/by/4.0 Copyright 2015 The Authors |
op_doi |
https://doi.org/10.1111/bor.12142 |
container_title |
Boreas |
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45 |
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1 |
container_start_page |
1 |
op_container_end_page |
45 |
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1766030556066217984 |