Show simple item record

Files in this item

Thumbnail

Item metadata

dc.contributor.authorCowton, Tom
dc.contributor.authorNienow, Peter
dc.contributor.authorSole, Andrew
dc.contributor.authorBartholomew, Ian
dc.contributor.authorMair, Douglas
dc.date.accessioned2016-09-12T14:30:12Z
dc.date.available2016-09-12T14:30:12Z
dc.date.issued2016-06-01
dc.identifier245779399
dc.identifier7f6897d1-bc1c-488b-ab1f-d71a188275c4
dc.identifier84979680211
dc.identifier.citationCowton , T , Nienow , P , Sole , A , Bartholomew , I & Mair , D 2016 , ' Variability in ice motion at a land-terminating Greenlandic outlet glacier: the role of channelized and distributed drainage systems ' , Journal of Glaciology , vol. 62 , no. 233 , pp. 451-466 . https://doi.org/10.1017/jog.2016.36en
dc.identifier.issn0022-1430
dc.identifier.otherRIS: urn:EBD5525DA6B4F1561AA9D48438E602CB
dc.identifier.otherORCID: /0000-0003-1668-7372/work/60427783
dc.identifier.urihttps://hdl.handle.net/10023/9484
dc.descriptionThis work was funded by the UK Natural Environment Research Council (through grants to Nienow (NE/F021399/1) and Mair (NE/H024964/1)), the Edinburgh University Moss Centenary Scholarship (Cowton and Bartholomew) and a Carnegie Research Grant (Nienow). GPS equipment and training were provided by the NERC Geophysical Equipment Facility (loan 868).en
dc.description.abstractWe use a combination of field observations and hydrological modelling to examine the mechanisms through which variability in melt water input affects ice motion at a land terminating Greenlandic outlet glacier. We find a close agreement between horizontal ice velocity, vertical ice velocity and modelled subglacial water pressure over the course of a melt season. On this basis, we argue that variation in horizontal and vertical ice velocity primarily reflects the displacement of basal ice during periods of cavity expansion and contraction, a process itself driven by fluctuations in basal water pressure originating in subglacial channels. This process is not captured by traditional sliding laws linking water pressure and basal velocity, which may hinder the simulation of realistic diurnal to seasonal variability in ice velocity in coupled models of glacial hydrology and dynamics.
dc.format.extent16
dc.format.extent980558
dc.language.isoeng
dc.relation.ispartofJournal of Glaciologyen
dc.subjectGlacier hydrologyen
dc.subjectIce dynamicsen
dc.subjectSubglacial processesen
dc.subjectG Geography (General)en
dc.subjectGB Physical geographyen
dc.subjectT-NDASen
dc.subject.lccG1en
dc.subject.lccGBen
dc.titleVariability in ice motion at a land-terminating Greenlandic outlet glacier: the role of channelized and distributed drainage systemsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Geography & Sustainable Developmenten
dc.contributor.institutionUniversity of St Andrews. Bell-Edwards Geographic Data Instituteen
dc.identifier.doi10.1017/jog.2016.36
dc.description.statusPeer revieweden


This item appears in the following Collection(s)

Show simple item record