Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change
Geophysical ice-sheet models are used to predict future ice-sheet dimensions and, in turn, these projections help estimate the magnitude of eustatic sea-level rise. Before models can confidently predict ice-sheet behavior, they must be validated by being able to duplicate the geological record of ic...
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ftdatacite:10.7916/d80p0zdw 2023-05-15T16:25:53+02:00 Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change Young, Nicolas E. Briner, Jason P. 2015 https://dx.doi.org/10.7916/d80p0zdw https://academiccommons.columbia.edu/doi/10.7916/D80P0ZDW unknown Columbia University https://dx.doi.org/10.1016/j.quascirev.2015.01.018 Ice sheets--Measurement Paleoclimatology Ice sheets--Mathematical models Climatic changes Geophysics Geomorphology Geology Text Articles article-journal ScholarlyArticle 2015 ftdatacite https://doi.org/10.7916/d80p0zdw https://doi.org/10.1016/j.quascirev.2015.01.018 2021-11-05T12:55:41Z Geophysical ice-sheet models are used to predict future ice-sheet dimensions and, in turn, these projections help estimate the magnitude of eustatic sea-level rise. Before models can confidently predict ice-sheet behavior, they must be validated by being able to duplicate the geological record of ice-sheet change. Here, we review geological records of Greenland Ice Sheet (GrIS) change, with emphasis on the warmer-than-present middle Holocene, and compare these records to published studies that numerically simulate GrIS behavior through the Holocene. Geological records are concentrated in West and Southwest Greenland, which are also the regions where the GrIS margin likely experienced the greatest distance of inland retreat during the middle Holocene. Several records spanning from Melville Bugt to Jakobshavn Isfjord in western Greenland indicate the GrIS achieved its minimum extent between ~5 and 3 ka, and farther south in the Kangerlussuaq region, new data presented here indicate the ice margin reached its minimum extent between ~4.2 and 1.8 ka. In the Narsarsuaq region in southern Greenland, the GrIS likely achieved its minimum configuration between ~7 and 4 ka. We highlight key similarities and discrepancies between these reconstructions and model results, and finally, we suggest that despite some degree of inland retreat, the West and Southwest GrIS margin remained relatively stable and close to its current position through the Holocene thermal maximum. Text Greenland Ice Sheet Jakobshavn Kangerlussuaq Melville bugt Narsarsuaq DataCite Metadata Store (German National Library of Science and Technology) Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Isfjord ENVELOPE(-26.917,-26.917,73.333,73.333) Melville Bugt ENVELOPE(-61.000,-61.000,75.750,75.750) Jakobshavn Isfjord ENVELOPE(-50.500,-50.500,69.167,69.167) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Ice sheets--Measurement Paleoclimatology Ice sheets--Mathematical models Climatic changes Geophysics Geomorphology Geology |
spellingShingle |
Ice sheets--Measurement Paleoclimatology Ice sheets--Mathematical models Climatic changes Geophysics Geomorphology Geology Young, Nicolas E. Briner, Jason P. Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change |
topic_facet |
Ice sheets--Measurement Paleoclimatology Ice sheets--Mathematical models Climatic changes Geophysics Geomorphology Geology |
description |
Geophysical ice-sheet models are used to predict future ice-sheet dimensions and, in turn, these projections help estimate the magnitude of eustatic sea-level rise. Before models can confidently predict ice-sheet behavior, they must be validated by being able to duplicate the geological record of ice-sheet change. Here, we review geological records of Greenland Ice Sheet (GrIS) change, with emphasis on the warmer-than-present middle Holocene, and compare these records to published studies that numerically simulate GrIS behavior through the Holocene. Geological records are concentrated in West and Southwest Greenland, which are also the regions where the GrIS margin likely experienced the greatest distance of inland retreat during the middle Holocene. Several records spanning from Melville Bugt to Jakobshavn Isfjord in western Greenland indicate the GrIS achieved its minimum extent between ~5 and 3 ka, and farther south in the Kangerlussuaq region, new data presented here indicate the ice margin reached its minimum extent between ~4.2 and 1.8 ka. In the Narsarsuaq region in southern Greenland, the GrIS likely achieved its minimum configuration between ~7 and 4 ka. We highlight key similarities and discrepancies between these reconstructions and model results, and finally, we suggest that despite some degree of inland retreat, the West and Southwest GrIS margin remained relatively stable and close to its current position through the Holocene thermal maximum. |
format |
Text |
author |
Young, Nicolas E. Briner, Jason P. |
author_facet |
Young, Nicolas E. Briner, Jason P. |
author_sort |
Young, Nicolas E. |
title |
Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change |
title_short |
Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change |
title_full |
Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change |
title_fullStr |
Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change |
title_full_unstemmed |
Holocene evolution of the western Greenland Ice Sheet: Assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change |
title_sort |
holocene evolution of the western greenland ice sheet: assessinggeophysical ice-sheet models with geological reconstructions ofice-margin change |
publisher |
Columbia University |
publishDate |
2015 |
url |
https://dx.doi.org/10.7916/d80p0zdw https://academiccommons.columbia.edu/doi/10.7916/D80P0ZDW |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) ENVELOPE(-26.917,-26.917,73.333,73.333) ENVELOPE(-61.000,-61.000,75.750,75.750) ENVELOPE(-50.500,-50.500,69.167,69.167) |
geographic |
Greenland Kangerlussuaq Isfjord Melville Bugt Jakobshavn Isfjord |
geographic_facet |
Greenland Kangerlussuaq Isfjord Melville Bugt Jakobshavn Isfjord |
genre |
Greenland Ice Sheet Jakobshavn Kangerlussuaq Melville bugt Narsarsuaq |
genre_facet |
Greenland Ice Sheet Jakobshavn Kangerlussuaq Melville bugt Narsarsuaq |
op_relation |
https://dx.doi.org/10.1016/j.quascirev.2015.01.018 |
op_doi |
https://doi.org/10.7916/d80p0zdw https://doi.org/10.1016/j.quascirev.2015.01.018 |
_version_ |
1766014735006826496 |