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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2009
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:6911 2023-05-15T16:24:52+02:00 Late Holocene relative sea level rise and the neoglacial history of the Greenland Ice Sheet. Long, A. J. Woodroffe, S. A. Dawson, S. Roberts, D. H. Bryant, L. M. 2009-05-01 http://dro.dur.ac.uk/6911/ https://doi.org/10.1002/jqs.1235 unknown John Wiley dro:6911 issn:0267-8179 issn: 1099-1417 doi:10.1002/jqs.1235 http://dro.dur.ac.uk/6911/ http://dx.doi.org/10.1002/jqs.1235 Journal of quaternary science, 2009, Vol.24(4), pp. 345-359 [Peer Reviewed Journal] Holocene Isolation basin Diatoms Isostasy Neoglacial. Article PeerReviewed 2009 ftunivdurham https://doi.org/10.1002/jqs.1235 2020-05-28T22:27:53Z 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. Article in Journal/Newspaper Greenland Ice Sheet Sisimiut Durham University: Durham Research Online Greenland Sisimiut ENVELOPE(-53.674,-53.674,66.939,66.939) Journal of Quaternary Science 24 4 345 359 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
topic |
Holocene Isolation basin Diatoms Isostasy Neoglacial. |
spellingShingle |
Holocene Isolation basin Diatoms Isostasy Neoglacial. Long, A. J. Woodroffe, S. A. Dawson, S. Roberts, D. H. Bryant, L. M. 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. |
format |
Article in Journal/Newspaper |
author |
Long, A. J. Woodroffe, S. A. Dawson, S. Roberts, D. H. Bryant, L. M. |
author_facet |
Long, A. J. Woodroffe, S. A. Dawson, S. Roberts, D. H. Bryant, L. M. |
author_sort |
Long, A. 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. |
publisher |
John Wiley |
publishDate |
2009 |
url |
http://dro.dur.ac.uk/6911/ 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 |
Journal of quaternary science, 2009, Vol.24(4), pp. 345-359 [Peer Reviewed Journal] |
op_relation |
dro:6911 issn:0267-8179 issn: 1099-1417 doi:10.1002/jqs.1235 http://dro.dur.ac.uk/6911/ http://dx.doi.org/10.1002/jqs.1235 |
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 |
_version_ |
1766013451030757376 |