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dc.contributor.authorGudlaugsson, E
dc.contributor.authorHumbert, A
dc.contributor.authorAndreassen, K
dc.contributor.authorClason, CC
dc.contributor.authorKleiner, T
dc.contributor.authorBeyer, S
dc.date.accessioned2017-04-25T13:51:11Z
dc.date.available2017-04-25T13:51:11Z
dc.date.issued2017-04-24
dc.identifier.issn0022-1430
dc.identifier.issn1727-5652
dc.identifier.urihttp://hdl.handle.net/10026.1/9118
dc.description.abstract

Ice-stream dynamics are strongly controlled by processes taking place at the ice/bed interface where subglacial water both lubricates the base and saturates any existing, underlying sediment. Large parts of the former Eurasian ice sheet were underlain by thick sequences of soft, marine sediments and many areas are imprinted with geomorphological features indicative of fast flow and wet basal conditions. Here, we study the effect of subglacial water on past Eurasian ice-sheet dynamics by incorporating a thin-film model of basal water flow into the ice-sheet model SICOPOLIS and use it to better represent flow in temperate areas. The adjunction of subglacial hydrology results in a smaller ice-sheet building up over time and generally faster ice velocities, which consequently reduces the total area fraction of temperate basal ice and ice streaming areas. Minima in the hydraulic pressure potential, governing water flow, are used as indicators for potential locations of past subglacial lakes and a probability distribution of lake existence is presented based on estimated lake depth and longevity.

dc.format.extent556-564
dc.languageen
dc.language.isoen
dc.publisherCambridge University Press (CUP)
dc.subjectglacier hydrology
dc.subjectice dynamics
dc.subjectice-sheet modelling
dc.subjectsubglacial lakes
dc.titleEurasian ice-sheet dynamics and sensitivity to subglacial hydrology
dc.typejournal-article
dc.typeArticle
plymouth.issue239
plymouth.volume63
plymouth.publisher-urlhttp://dx.doi.org/10.1017/jog.2017.21
plymouth.publication-statusPublished
plymouth.journalJournal of Glaciology
dc.identifier.doi10.1017/jog.2017.21
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Geography, Earth and Environmental Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA14 Geography and Environmental Studies
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Centre for Research in Environment and Society (CeRES)
plymouth.organisational-group/Plymouth/Research Groups/Centre for Research in Environment and Society (CeRES)/CeRES (Reporting)
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
plymouth.organisational-group/Plymouth/Users by role/Researchers in ResearchFish submission
dcterms.dateAccepted2017-03-15
dc.identifier.eissn1727-5652
dc.rights.embargoperiodNo embargo
rioxxterms.versionofrecord10.1017/jog.2017.21
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2017-04-24
rioxxterms.typeJournal Article/Review
plymouth.oa-locationhttps://elements.plymouth.ac.uk/viewobject.html?cid=1&id=487209


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