Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/25102
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dc.contributor.authorPatton, Henryen_UK
dc.contributor.authorHubbard, Alunen_UK
dc.contributor.authorBradwell, Tomen_UK
dc.contributor.authorSchomacker, Andersen_UK
dc.date.accessioned2017-04-19T22:11:18Z-
dc.date.available2017-04-19T22:11:18Z-
dc.date.issued2017-03en_UK
dc.identifier.urihttp://hdl.handle.net/1893/25102-
dc.description.abstractThe fragmentary glacial-geological record across the Icelandic continental shelf has hampered reconstruction of the volume, extent and chronology of the Late Weichselian ice sheet particularly in key offshore zones. Marine geophysical data collected over the last two decades reveal that the ice sheet likely attained a continental shelf-break position in all sectors during the Last Glacial Maximum, though its precise timing and configuration remains largely unknown. Within this context, we review the available empirical evidence and use a well-constrained three-dimensional thermomechanical model to investigate the drivers of an extensive Late Weichselian Icelandic ice-sheet, its sensitivity to environmental forcing, and phases of deglaciation. Our reconstruction attains the continental shelf break across all sectors with a total ice volume of 5.96×105km3 with high precipitation rates being critical to forcing extensive ice sheet flow offshore. Due to its location astride an active mantle plume, a relatively fast and dynamic ice sheet with a low aspect ratio is maintained. Our results reveal that once initial ice-sheet retreat was triggered through climate warming at 21.8 ka BP, marine deglaciation was rapid and accomplished in all sectors within c. 5 ka at a mean rate of 71 Gt of mass loss per year. This rate of ice wastage is comparable to contemporary rates observed for the West Antarctic ice sheet. The ice sheet subsequently stabilised on shallow pinning points across the near shelf for two millennia, but abrupt atmospheric warming during the Bølling Interstadial forced a second, dramatic collapse of the ice sheet onshore with a net wastage of 221 Gt a−1 over 750 years, analogous to contemporary Greenland rates of mass loss. Geothermal conditions impart a significant control on the ice sheet's transient response, particularly during phases of rapid retreat. Insights from this study suggests that large sectors of contemporary ice sheets overlying geothermally active regions, such as Siple Coast, Antarctica, and NE Greenland, have the potential to experience rapid phases of mass loss and deglaciation once initial retreat is initiated.en_UK
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.relationPatton H, Hubbard A, Bradwell T & Schomacker A (2017) The configuration, sensitivity and rapid retreat of the Late Weichselian Icelandic ice sheet. <i>Earth-Science Reviews</i>, 166, pp. 223-245. https://doi.org/10.1016/j.earscirev.2017.02.001en_UK
dc.rightsThis item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Patton H, Hubbard A, Bradwell T & Schomacker A (2017) The configuration, sensitivity and rapid retreat of the Late Weichselian Icelandic ice sheet, Earth-Science Reviews, 166, pp. 223-245. DOI: 10.1016/j.earscirev.2017.02.001 © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/en_UK
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_UK
dc.subjectIcelanden_UK
dc.subjectLate Weichselianen_UK
dc.subjectIce sheet modellingen_UK
dc.subjectGeothermalen_UK
dc.subjectCollapseen_UK
dc.subjectPalaeo reconstructionen_UK
dc.subjectShelf edgeen_UK
dc.titleThe configuration, sensitivity and rapid retreat of the Late Weichselian Icelandic ice sheeten_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2018-02-04en_UK
dc.rights.embargoreason[PATTON_etal_ESR2017_AcceptedMS_LoRes.pdf] Publisher requires embargo of 12 months after formal publication.en_UK
dc.identifier.doi10.1016/j.earscirev.2017.02.001en_UK
dc.citation.jtitleEarth-Science Reviewsen_UK
dc.citation.issn0012-8252en_UK
dc.citation.volume166en_UK
dc.citation.spage223en_UK
dc.citation.epage245en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.author.emailtom.bradwell@stir.ac.uken_UK
dc.citation.date03/02/2017en_UK
dc.contributor.affiliationThe Arctic University of Norwayen_UK
dc.contributor.affiliationAberystwyth Universityen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationThe Arctic University of Norwayen_UK
dc.identifier.isiWOS:000396974000011en_UK
dc.identifier.scopusid2-s2.0-85012115789en_UK
dc.identifier.wtid534595en_UK
dc.contributor.orcid0000-0003-0947-3309en_UK
dc.date.accepted2017-02-01en_UK
dcterms.dateAccepted2017-02-01en_UK
dc.date.filedepositdate2017-03-07en_UK
rioxxterms.apcnot requireden_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionAMen_UK
local.rioxx.authorPatton, Henry|en_UK
local.rioxx.authorHubbard, Alun|en_UK
local.rioxx.authorBradwell, Tom|0000-0003-0947-3309en_UK
local.rioxx.authorSchomacker, Anders|en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate2018-02-04en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved||2018-02-03en_UK
local.rioxx.licencehttp://creativecommons.org/licenses/by-nc-nd/4.0/|2018-02-04|en_UK
local.rioxx.filenamePATTON_etal_ESR2017_AcceptedMS_LoRes.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source0012-8252en_UK
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