dc.contributor.author | Andersen, Jane Lund | |
dc.contributor.author | Newall, J.C. | |
dc.contributor.author | Fredin, Ola | |
dc.contributor.author | Glasser, Neil F. | |
dc.contributor.author | Lifton, Nathaniel A. | |
dc.contributor.author | Stuart, Finlay M. | |
dc.contributor.author | Fabel, Derek | |
dc.contributor.author | Caffee, Marc | |
dc.contributor.author | Pedersen, Vivi K. | |
dc.contributor.author | Koester, Alexandria | |
dc.contributor.author | Sugunuma, Yusuke | |
dc.contributor.author | Harbor, Jonathan M. | |
dc.contributor.author | Stroeven, Arjen P. | |
dc.date.accessioned | 2023-03-20T09:46:33Z | |
dc.date.available | 2023-03-20T09:46:33Z | |
dc.date.created | 2023-03-17T10:31:48Z | |
dc.date.issued | 2023 | |
dc.identifier.issn | 2662-4435 | |
dc.identifier.uri | https://hdl.handle.net/11250/3059162 | |
dc.description.abstract | The impact of late Cenozoic climate on the East Antarctic Ice Sheet is uncertain. Poorly constrained patterns of relative ice thinning and thickening impair the reconstruction of past ice-sheet dynamics and global sea-level budgets. Here we quantify long-term ice cover of mountains protruding the ice-sheet surface in western Dronning Maud Land, using cosmogenic Chlorine-36, Aluminium-26, Beryllium-10, and Neon-21 from bedrock in an inverse modeling approach. We find that near-coastal sites experienced ice burial up to 75–97% of time since 1 Ma, while interior sites only experienced brief periods of ice burial, generally <20% of time since 1 Ma. Based on these results, we suggest that the escarpment in Dronning Maud Land acts as a hinge-zone, where ice-dynamic changes driven by grounding-line migration are attenuated inland from the coastal portions of the East Antarctic Ice Sheet, and where precipitation-controlled ice-thickness variations on the polar plateau taper off towards the coast. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer Nature | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | A topographic hinge-zone divides coastal and inland ice dynamic regimes in East Antarctica | en_US |
dc.title.alternative | A topographic hinge-zone divides coastal and inland ice dynamic regimes in East Antarctica | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.volume | 4 | en_US |
dc.source.journal | Communications Earth & Environment | en_US |
dc.source.issue | 9 | en_US |
dc.identifier.doi | 10.1038/s43247-022-00673-6 | |
dc.identifier.cristin | 2134678 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |