| dc.contributor.author | Boex, J | |
| dc.contributor.author | Fogwill, C | |
| dc.contributor.author | Harrison, S | |
| dc.contributor.author | Glasser, NF | |
| dc.contributor.author | Hein, A | |
| dc.contributor.author | Schnabel, C | |
| dc.contributor.author | Xu, S | |
| dc.date.accessioned | 2018-05-04T14:33:37Z | |
| dc.date.issued | 2013-07-02 | |
| dc.description.abstract | Here we present the first reconstruction of vertical ice-sheet profile changes from any of the Southern Hemisphere's mid-latitude Pleistocene ice sheets. We use cosmogenic radio-nuclide (CRN) exposure analysis to record the decay of the former Patagonian Ice Sheet (PIS) from the Last Glacial Maximum (LGM) and into the late glacial. Our samples, from mountains along an east-west transect to the east of the present North Patagonian Icefield (NPI), serve as 'dipsticks' that allow us to reconstruct past changes in ice-sheet thickness, and demonstrates that the former PIS remained extensive and close to its LGM extent in this region until ~19.0 ka. After this time rapid ice-sheet thinning, initiated at ~18.1 ka, saw ice at or near its present dimension by 15.5 ka. We argue this rapid thinning was triggered by a combination of the rapid southward migration of the precipitation bearing Southern Hemisphere (SH) westerlies and regional warming. | en_GB |
| dc.description.sponsorship | CRN exposure ages were funded by a NERC CIAF Award to J.B., S.H. and C.J.F. C.J.F.
acknowledges a Royal Society Research Grant. Sample preparation was undertaken at the
NERC Cosmogenic Isotope Analysis Facility and the University of Exeter Cosmogenic
Isotope Lab. J.B. was supported by a NERC postgraduate studentship to S.H. and C.J.F.
acknowledges the support of ARC awards FL100100195 and FT 120100004 | en_GB |
| dc.identifier.citation | Published online 02 July 2013 | en_GB |
| dc.identifier.doi | 10.1038/srep02118 | |
| dc.identifier.grantnumber | FL100100195 | en_GB |
| dc.identifier.grantnumber | FT 120100004 | en_GB |
| dc.identifier.uri | http://hdl.handle.net/10871/32732 | |
| dc.language.iso | en | en_GB |
| dc.publisher | Nature Publishing Group | en_GB |
| dc.relation.url | https://www.ncbi.nlm.nih.gov/pubmed/23817136 | en_GB |
| dc.rights | © The Author(s). Open Access. This article is distributed under the terms of the Creative Commons Attribution 3.0 International License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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. | en_GB |
| dc.title | Rapid thinning of the Late Pleistocene Patagonian Ice Sheet followed migration of the Southern Westerlies. | en_GB |
| dc.type | Article | en_GB |
| dc.date.available | 2018-05-04T14:33:37Z | |
| exeter.place-of-publication | England | en_GB |
| dc.description | This is the final version of the article. Available from Nature Publishing Group via the DOI in this record. | en_GB |
| dc.identifier.journal | Scientific reports | en_GB |
