A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period
The magnitude and trajectory of sea-level change during marine isotope stage (MIS) 5e of the last interglacial period is uncertain. In general, sea level may have been 6–9 m above present sea level, with one or more oscillations of up to several metres superimposed. Here we present a well-dated rela...
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ftusouthflorida:oai:digitalcommons.usf.edu:kip_articles-3448 2023-09-05T13:20:18+02:00 A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period Polyak, Victor J. Onac, Bogdan P. Fornós, Joan J. 2018-09-10T07:00:00Z https://digitalcommons.usf.edu/kip_articles/2449 https://doi.org/10.1038/s41561-018-0222-5 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/kip_articles/2449 https://doi.org/10.1038/s41561-018-0222-5 KIP Articles Geochemistry Palaeoceanography Palaeoclimate text 2018 ftusouthflorida https://doi.org/10.1038/s41561-018-0222-5 2023-08-13T16:26:52Z The magnitude and trajectory of sea-level change during marine isotope stage (MIS) 5e of the last interglacial period is uncertain. In general, sea level may have been 6–9 m above present sea level, with one or more oscillations of up to several metres superimposed. Here we present a well-dated relative sea-level record from the island of Mallorca in the western Mediterranean Sea for MIS-5e, based on the occurrence of phreatic overgrowths on speleothems forming near sea level. We find that relative sea-level in this region was within a range of 2.15 ± 0.75 m above present levels between 126,600 ± 400 and 116,000 ± 800 years ago, although centennial-scale excursions cannot be excluded due to some gaps in the speleothem record. We corrected our relative sea-level record for glacio-isostatic adjustment using nine different glacial isostatic models. Together, these models suggest that ice-equivalent sea-level in Mallorca peaked at the start of MIS-5e then gradually decreased and stabilized by 122,000 years ago, until the highstand termination 116,000 years ago. Our sea-level record does not support the hypothesis of rapid sea-level fluctuations within MIS-5e. Instead, we suggest that melting of the polar ice sheets occurred early in the interglacial period, followed by gradual ice-sheet growth. Text Ice Sheet University of South Florida St. Petersburg: Digital USFSP Nature Geoscience 11 11 860 864 |
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University of South Florida St. Petersburg: Digital USFSP |
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ftusouthflorida |
language |
unknown |
topic |
Geochemistry Palaeoceanography Palaeoclimate |
spellingShingle |
Geochemistry Palaeoceanography Palaeoclimate Polyak, Victor J. Onac, Bogdan P. Fornós, Joan J. A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period |
topic_facet |
Geochemistry Palaeoceanography Palaeoclimate |
description |
The magnitude and trajectory of sea-level change during marine isotope stage (MIS) 5e of the last interglacial period is uncertain. In general, sea level may have been 6–9 m above present sea level, with one or more oscillations of up to several metres superimposed. Here we present a well-dated relative sea-level record from the island of Mallorca in the western Mediterranean Sea for MIS-5e, based on the occurrence of phreatic overgrowths on speleothems forming near sea level. We find that relative sea-level in this region was within a range of 2.15 ± 0.75 m above present levels between 126,600 ± 400 and 116,000 ± 800 years ago, although centennial-scale excursions cannot be excluded due to some gaps in the speleothem record. We corrected our relative sea-level record for glacio-isostatic adjustment using nine different glacial isostatic models. Together, these models suggest that ice-equivalent sea-level in Mallorca peaked at the start of MIS-5e then gradually decreased and stabilized by 122,000 years ago, until the highstand termination 116,000 years ago. Our sea-level record does not support the hypothesis of rapid sea-level fluctuations within MIS-5e. Instead, we suggest that melting of the polar ice sheets occurred early in the interglacial period, followed by gradual ice-sheet growth. |
format |
Text |
author |
Polyak, Victor J. Onac, Bogdan P. Fornós, Joan J. |
author_facet |
Polyak, Victor J. Onac, Bogdan P. Fornós, Joan J. |
author_sort |
Polyak, Victor J. |
title |
A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period |
title_short |
A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period |
title_full |
A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period |
title_fullStr |
A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period |
title_full_unstemmed |
A highly resolved record of relative sea level in the western Mediterranean Sea during the last interglacial period |
title_sort |
highly resolved record of relative sea level in the western mediterranean sea during the last interglacial period |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2018 |
url |
https://digitalcommons.usf.edu/kip_articles/2449 https://doi.org/10.1038/s41561-018-0222-5 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
KIP Articles |
op_relation |
https://digitalcommons.usf.edu/kip_articles/2449 https://doi.org/10.1038/s41561-018-0222-5 |
op_doi |
https://doi.org/10.1038/s41561-018-0222-5 |
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Nature Geoscience |
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11 |
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11 |
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860 |
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864 |
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1776200999641284608 |