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A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting

The most rapid global sea-level rise event of the last deglaciation, Meltwater Pulse 1A (MWP-1A), occurred ∼14,650 years ago. Considerable uncertainty regarding the sources of meltwater limits understanding of the relationship between MWP-1A and the concurrent fast-changing climate. Here we present...

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Autores principales: Lin, Yucheng, Hibbert, Fiona D., Whitehouse, Pippa L., Woodroffe, Sarah A., Purcell, Anthony, Shennan, Ian, Bradley, Sarah L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8016857/
https://www.ncbi.nlm.nih.gov/pubmed/33795667
http://dx.doi.org/10.1038/s41467-021-21990-y
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author Lin, Yucheng
Hibbert, Fiona D.
Whitehouse, Pippa L.
Woodroffe, Sarah A.
Purcell, Anthony
Shennan, Ian
Bradley, Sarah L.
author_facet Lin, Yucheng
Hibbert, Fiona D.
Whitehouse, Pippa L.
Woodroffe, Sarah A.
Purcell, Anthony
Shennan, Ian
Bradley, Sarah L.
author_sort Lin, Yucheng
collection PubMed
description The most rapid global sea-level rise event of the last deglaciation, Meltwater Pulse 1A (MWP-1A), occurred ∼14,650 years ago. Considerable uncertainty regarding the sources of meltwater limits understanding of the relationship between MWP-1A and the concurrent fast-changing climate. Here we present a data-driven inversion approach, using a glacio-isostatic adjustment model to invert for the sources of MWP-1A via sea-level constraints from six geographically distributed sites. The results suggest contributions from Antarctica, 1.3 m (0–5.9 m; 95% probability), Scandinavia, 4.6 m (3.2–6.4 m) and North America, 12.0 m (5.6–15.4 m), giving a global mean sea-level rise of 17.9 m (15.7–20.2 m) in 500 years. Only a North American dominant scenario successfully predicts the observed sea-level change across our six sites and an Antarctic dominant scenario is firmly refuted by Scottish isolation basin records. Our sea-level based results therefore reconcile with field-based ice-sheet reconstructions.
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spelling pubmed-80168572021-04-16 A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting Lin, Yucheng Hibbert, Fiona D. Whitehouse, Pippa L. Woodroffe, Sarah A. Purcell, Anthony Shennan, Ian Bradley, Sarah L. Nat Commun Article The most rapid global sea-level rise event of the last deglaciation, Meltwater Pulse 1A (MWP-1A), occurred ∼14,650 years ago. Considerable uncertainty regarding the sources of meltwater limits understanding of the relationship between MWP-1A and the concurrent fast-changing climate. Here we present a data-driven inversion approach, using a glacio-isostatic adjustment model to invert for the sources of MWP-1A via sea-level constraints from six geographically distributed sites. The results suggest contributions from Antarctica, 1.3 m (0–5.9 m; 95% probability), Scandinavia, 4.6 m (3.2–6.4 m) and North America, 12.0 m (5.6–15.4 m), giving a global mean sea-level rise of 17.9 m (15.7–20.2 m) in 500 years. Only a North American dominant scenario successfully predicts the observed sea-level change across our six sites and an Antarctic dominant scenario is firmly refuted by Scottish isolation basin records. Our sea-level based results therefore reconcile with field-based ice-sheet reconstructions. Nature Publishing Group UK 2021-04-01 /pmc/articles/PMC8016857/ /pubmed/33795667 http://dx.doi.org/10.1038/s41467-021-21990-y Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Lin, Yucheng
Hibbert, Fiona D.
Whitehouse, Pippa L.
Woodroffe, Sarah A.
Purcell, Anthony
Shennan, Ian
Bradley, Sarah L.
A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting
title A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting
title_full A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting
title_fullStr A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting
title_full_unstemmed A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting
title_short A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting
title_sort reconciled solution of meltwater pulse 1a sources using sea-level fingerprinting
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8016857/
https://www.ncbi.nlm.nih.gov/pubmed/33795667
http://dx.doi.org/10.1038/s41467-021-21990-y
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