Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet
In West Greenland, early and mid Holocene relative sea level (RSL) fall was replaced by late Holocene RSL rise during the Neoglacial, after 4–3?cal. ka BP (thousand calibrated years before present). Here we present the results of an isolation basin RSL study completed near to the coastal town of Sis...
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ftunivdundeepure:oai:discovery.dundee.ac.uk:publications/512bb2eb-220f-471a-b5c3-789a14375bbe 2024-06-23T07:53:11+00:00 Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet Long, Antony J. Woodroffe, Sarah A. Dawson, Sue Roberts, David H. Bryant, Charlotte L. 2009-05 https://discovery.dundee.ac.uk/en/publications/512bb2eb-220f-471a-b5c3-789a14375bbe https://doi.org/10.1002/jqs.1235 eng eng https://discovery.dundee.ac.uk/en/publications/512bb2eb-220f-471a-b5c3-789a14375bbe info:eu-repo/semantics/restrictedAccess Long , A J , Woodroffe , S A , Dawson , S , Roberts , D H & Bryant , C L 2009 , ' Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet ' , Journal of Quaternary Science , vol. 24 , no. 4 , pp. 345-359 . https://doi.org/10.1002/jqs.1235 Holocene Isolation basin Diatoms Isostasy Neoglacial article 2009 ftunivdundeepure https://doi.org/10.1002/jqs.1235 2024-06-04T14:53:26Z In West Greenland, early and mid Holocene relative sea level (RSL) fall was replaced by late Holocene RSL rise during the Neoglacial, after 4–3?cal. ka BP (thousand calibrated years before present). Here we present the results of an isolation basin RSL study completed near to the coastal town of Sisimiut, in central West Greenland. RSL fell from 14?m above sea level at 5.7?cal. ka BP to reach a lowstand of -4.0?m at 2.3–1.2?cal. ka BP, before rising by an equivalent amount to present. Differences in the timing and magnitude of the RSL lowstand between this and other sites in West and South Greenland record the varied interplay of local and non-Greenland RSL processes, notably the reloading of the Earth's crust caused by a Neoglacial expansion of the Greenland Ice Sheet (GIS) and the subsidence associated with the collapse of the Laurentide Ice Sheet forebulge. This means that the timing of the sea level lowstand cannot be used to infer directly when the GIS advanced during the Neoglacial. The rise in Late Holocene RSL is contrary to recently reported bedrock uplift in the Sisimiut area, based on repeat GPS surveys. This indicates that a belt of peripheral subsidence around the current ice sheet margin was more extensive in the late Holocene, and that there has been a switch from subsidence to uplift at some point in the last thousand years or so. Copyright © 2008 John Wiley & Sons, Ltd. Article in Journal/Newspaper Greenland Ice Sheet Sisimiut Discovery - University of Dundee Online Publications Greenland Sisimiut ENVELOPE(-53.674,-53.674,66.939,66.939) Journal of Quaternary Science 24 4 345 359 |
institution |
Open Polar |
collection |
Discovery - University of Dundee Online Publications |
op_collection_id |
ftunivdundeepure |
language |
English |
topic |
Holocene Isolation basin Diatoms Isostasy Neoglacial |
spellingShingle |
Holocene Isolation basin Diatoms Isostasy Neoglacial Long, Antony J. Woodroffe, Sarah A. Dawson, Sue Roberts, David H. Bryant, Charlotte L. Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet |
topic_facet |
Holocene Isolation basin Diatoms Isostasy Neoglacial |
description |
In West Greenland, early and mid Holocene relative sea level (RSL) fall was replaced by late Holocene RSL rise during the Neoglacial, after 4–3?cal. ka BP (thousand calibrated years before present). Here we present the results of an isolation basin RSL study completed near to the coastal town of Sisimiut, in central West Greenland. RSL fell from 14?m above sea level at 5.7?cal. ka BP to reach a lowstand of -4.0?m at 2.3–1.2?cal. ka BP, before rising by an equivalent amount to present. Differences in the timing and magnitude of the RSL lowstand between this and other sites in West and South Greenland record the varied interplay of local and non-Greenland RSL processes, notably the reloading of the Earth's crust caused by a Neoglacial expansion of the Greenland Ice Sheet (GIS) and the subsidence associated with the collapse of the Laurentide Ice Sheet forebulge. This means that the timing of the sea level lowstand cannot be used to infer directly when the GIS advanced during the Neoglacial. The rise in Late Holocene RSL is contrary to recently reported bedrock uplift in the Sisimiut area, based on repeat GPS surveys. This indicates that a belt of peripheral subsidence around the current ice sheet margin was more extensive in the late Holocene, and that there has been a switch from subsidence to uplift at some point in the last thousand years or so. Copyright © 2008 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Long, Antony J. Woodroffe, Sarah A. Dawson, Sue Roberts, David H. Bryant, Charlotte L. |
author_facet |
Long, Antony J. Woodroffe, Sarah A. Dawson, Sue Roberts, David H. Bryant, Charlotte L. |
author_sort |
Long, Antony J. |
title |
Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet |
title_short |
Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet |
title_full |
Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet |
title_fullStr |
Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet |
title_full_unstemmed |
Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet |
title_sort |
late holocene relative sea level rise and the neoglacial history of the greenland ice sheet |
publishDate |
2009 |
url |
https://discovery.dundee.ac.uk/en/publications/512bb2eb-220f-471a-b5c3-789a14375bbe https://doi.org/10.1002/jqs.1235 |
long_lat |
ENVELOPE(-53.674,-53.674,66.939,66.939) |
geographic |
Greenland Sisimiut |
geographic_facet |
Greenland Sisimiut |
genre |
Greenland Ice Sheet Sisimiut |
genre_facet |
Greenland Ice Sheet Sisimiut |
op_source |
Long , A J , Woodroffe , S A , Dawson , S , Roberts , D H & Bryant , C L 2009 , ' Late Holocene relative sea level rise and the Neoglacial history of the Greenland ice sheet ' , Journal of Quaternary Science , vol. 24 , no. 4 , pp. 345-359 . https://doi.org/10.1002/jqs.1235 |
op_relation |
https://discovery.dundee.ac.uk/en/publications/512bb2eb-220f-471a-b5c3-789a14375bbe |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/jqs.1235 |
container_title |
Journal of Quaternary Science |
container_volume |
24 |
container_issue |
4 |
container_start_page |
345 |
op_container_end_page |
359 |
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1802644710772178944 |