Show simple item record

dc.contributor.authorPatton, Henry
dc.contributor.authorHubbard, Alun Lloyd
dc.contributor.authorAndreassen, Karin
dc.contributor.authorWinsborrow, Monica
dc.contributor.authorStroeven, Arjen P.
dc.date.accessioned2017-03-09T14:15:38Z
dc.date.available2017-03-09T14:15:38Z
dc.date.issued2016-12-01
dc.description.abstractThe Eurasian ice-sheet complex (EISC) was the third largest ice mass during the Last Glacial Maximum (LGM), after the Antarctic and North American ice sheets. Despite its global significance, a comprehensive account of its evolution from independent nucleation centres to its maximum extent is conspicuously lacking. Here, a first-order, thermomechanical model, robustly constrained by empirical evidence, is used to investigate the dynamics of the EISC throughout its build-up to its maximum configuration. The ice flow model is coupled to a reference climate and applied at 10 km spatial resolution across a domain that includes the three main spreading centres of the Celtic, Fennoscandian and Barents Sea ice sheets. The model is forced with the NGRIP palaeo-isotope curve from 37 ka BP onwards and model skill is assessed against collated flowsets, marginal moraines, exposure ages and relative sea-level history. The evolution of the EISC to its LGM configuration was complex and asynchronous; the western, maritime margins of the Fennoscandian and Celtic ice sheets responded rapidly and advanced across their continental shelves by 29 ka BP, yet the maximum aerial extent (5.48 × 106 km2) and volume (7.18 × 106 km3) of the ice complex was attained some 6 ka later at c. 22.7 ka BP. This maximum stand was short-lived as the North Sea and Atlantic margins were already in retreat whilst eastern margins were still advancing up until c. 20 ka BP. High rates of basal erosion are modelled beneath ice streams and outlet glaciers draining the Celtic and Fennoscandian ice sheets with extensive preservation elsewhere due to frozen subglacial conditions, including much of the Barents and Kara seas. Here, and elsewhere across the Norwegian shelf and North Sea, high pressure subglacial conditions would have promoted localised gas hydrate formation.en_US
dc.description.sponsorshipThe research is part of the Centre for Arctic Gas Hydrate, Environment and Climate, and was supported by the Research Council of Norway through its Centres of Excellence funding scheme (grant 223259), the PetroMaks project “Glaciations in the Barents Sea area (GlaciBar)” (grant 200672), and a Stockholm Uni SUCLIM consortium grant (to Stroeven) that supported Hubbard in the early development of the model code.en_US
dc.descriptionPublished version, source at <a href=http://doi.org/10.1016/j.quascirev.2016.10.009>http://doi.org/10.1016/j.quascirev.2016.10.009</a>. License <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/>CC BY-NC-ND 4.0</a>.en_US
dc.identifier.citationPatton H, Hubbard AL, Andreassen K, Winsborrow M, Stroeven AP. The build-up, configuration, and dynamical sensitivity of the Eurasian ice-sheet complex to Late Weichselian climatic and oceanic forcing. Quaternary Science Reviews. 2016;153:97-121en_US
dc.identifier.cristinIDFRIDAID 1396058
dc.identifier.doi10.1016/j.quascirev.2016.10.009
dc.identifier.issn0277-3791
dc.identifier.issn1873-457X
dc.identifier.urihttps://hdl.handle.net/10037/10523
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalQuaternary Science Reviews
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FundingProgram/200672/Norway/PetroMaks/GlaciBar/en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FundingProgram/223259/Norway///en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectIce-sheet modellingen_US
dc.subjectEurasian ice sheet complexen_US
dc.subjectLate Weichselianen_US
dc.subjectPalaeo ice-sheet reconstructionen_US
dc.subjectDynamic ice behaviouren_US
dc.subjectPalaeo climateen_US
dc.subjectLandscape evolutionen_US
dc.subjectSubglacial erosionen_US
dc.subjectBarents Sea ice sheeten_US
dc.subjectFennoscandian ice sheeten_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.titleThe build-up, configuration, and dynamical sensitivity of the Eurasian ice-sheet complex to Late Weichselian climatic and oceanic forcingen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record