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

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dc.contributor.authorLin, Yucheng
dc.contributor.authorHibbert, Fiona
dc.contributor.authorWhitehouse, Pippa L.
dc.contributor.authorWoodroffe, Sarah A.
dc.contributor.authorPurcell, Anthony
dc.contributor.authorShennan, Ian
dc.contributor.authorBradley, Sarah L.
dc.date.accessioned2022-06-22T01:00:42Z
dc.date.available2022-06-22T01:00:42Z
dc.date.issued2021-04-01
dc.date.updated2021-04-04T10:05:44Z
dc.description.abstractThe 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 glacioisostatic 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.en_AU
dc.description.sponsorshipY.L. was supported by China Scholarship Council—Durham University joint scholarship. F.D.H. received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement (No. 838841—ExTaSea). S.L.B. was supported by the Natural Environment Research Council consortium grant BRITICE-CHRONO NE/J009768/1 and has benefited from the PalGlac team of researchers and received funding from the European Research Council (ERC) to Chris Clark under the European Union’s Horizon 2020 research and innovation programme (Grant agreement No. 787263). The collection of the Scottish isolation basin data was supported by NERC Grants GST/02/0760 and GST/02/0761. The authors acknowledge PALSEA, a working group of the International Union for Quaternary Sciences (INQUA) and Past Global Changes (PAGES), which in turn received support from the Swiss Academy of Sciences and the Chinese Academy of Sciences. GIA calculations in this study were performed on the Terrawulf cluster, a computational facility supported through the AuScope Australian Geophysical Observing System (AGOS) and the Australian National Collaborative Research Infrastructure Strategy (NCRIS).en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn2041-1723en_AU
dc.identifier.urihttp://hdl.handle.net/1885/267446
dc.language.isoen_AUen_AU
dc.provenanceThis 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/en_AU
dc.publisherNature Publishing Group UKen_AU
dc.rights© The Author(s) 2021en_AU
dc.rights.licenseCreative Commons Attribution 4.0 International Licenseen_AU
dc.rights.urihttp://creativecommons.org/ licenses/by/4.0/en_AU
dc.sourceNature Communicationsen_AU
dc.titleA reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprintingen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue1en_AU
local.bibliographicCitation.lastpage11en_AU
local.bibliographicCitation.startpage1en_AU
local.contributor.affiliationLin, Yucheng, Research School of Earth Sciences, The Australian National Universityen_AU
local.contributor.affiliationHibbert, Fiona D., Research School of Earth Sciences, The Australian National Universityen_AU
local.contributor.affiliationPurcell, Anthony, Research School of Earth Sciences, The Australian National Universityen_AU
local.contributor.authoruidu8903837en_AU
local.description.notesImported from Springer Natureen_AU
local.identifier.citationvolume12en_AU
local.identifier.doi10.1038/s41467-021-21990-yen_AU
local.publisher.urlhttp://www.nature.com/ncomms/index.htmlen_AU
local.type.statusPublished Versionen_AU

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