Show simple item record

dc.contributor.authorMcMillan, M
dc.contributor.authorShepherd, A
dc.contributor.authorGourmelen, N
dc.contributor.authorDehecq, A
dc.contributor.authorLeeson, A
dc.contributor.authorRidout, A
dc.contributor.authorFlament, T
dc.contributor.authorHogg, A
dc.contributor.authorGilbert, L
dc.contributor.authorBenham, Toby
dc.contributor.authorVan Den Broeke, M
dc.contributor.authorDowdeswell, Julian
dc.contributor.authorFettweis, X
dc.contributor.authorNoël, B
dc.contributor.authorStrozzi, T
dc.date.accessioned2015-02-18T14:51:13Z
dc.date.available2015-02-18T14:51:13Z
dc.date.issued2014-12-28
dc.identifier.citationM McMillan, A Shepherd, N Gourmelen, A Dehecq, A Leeson, A Ridout, T Flament, A Hogg, L Gilbert, T Benham, M van den Broeke, JA Dowdeswell, X Fettweis, B Noël, T Strozzi, Geophysical Research Letters 2014, 41, 8902–8909
dc.identifier.issn0094-8276
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/246872
dc.description.abstractWe use satellite observations to document rapid acceleration and ice loss from a formerly slow-flowing, marine-based sector of Austfonna, the largest ice cap in the Eurasian Arctic. During the past two decades, the sector ice discharge has increased 45-fold, the velocity regime has switched from predominantly slow (~ 101 m/yr) to fast (~ 103 m/yr) flow, and rates of ice thinning have exceeded 25 m/yr. At the time of widespread dynamic activation, parts of the terminus may have been near floatation. Subsequently, the imbalance has propagated 50 km inland to within 8 km of the ice cap summit. Our observations demonstrate the ability of slow-flowing ice to mobilize and quickly transmit the dynamic imbalance inland; a process that we show has initiated rapid ice loss to the ocean and redistribution of ice mass to locations more susceptible to melt, yet which remains poorly understood.
dc.description.sponsorshipThis work was supported by the UK Natural Environment Research Council.
dc.languageEnglish
dc.language.isoen
dc.publisherBlackwell Publishing Ltd
dc.rightsAttribution 2.0 UK: England & Wales
dc.rights.urihttp://creativecommons.org/licenses/by/2.0/uk/
dc.subjectice cap
dc.subjectmass balance
dc.subjectAustfonna
dc.subjectdynamic instability
dc.subjectaltimetry
dc.subjectInSAR
dc.titleRapid dynamic activation of a marine-based Arctic ice cap
dc.typeArticle
dc.description.versionThis article was originally published in Geophysical Research Letters (M McMillan, A Shepherd, N Gourmelen, A Dehecq, A Leeson, A Ridout, T Flament, A Hogg, L Gilbert, T Benham, M van den Broeke, JA Dowdeswell, X Fettweis, B Noël, T Strozzi, Geophysical Research Letters 2014, 41, 8902–8909).
prism.endingPage8909
prism.publicationDate2014
prism.publicationNameGeophysical Research Letters
prism.startingPage8902
prism.volume41
dc.rioxxterms.funderNatural Environment Research Council
rioxxterms.versionofrecord10.1002/2014GL062255
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2014-12-02
dc.contributor.orcidBenham, Toby [0000-0003-2723-1880]
dc.contributor.orcidDowdeswell, Julian [0000-0003-1369-9482]
dc.identifier.eissn1944-8007
rioxxterms.typeJournal Article/Review
cam.issuedOnline2014-12-23


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution 2.0 UK: England & Wales
Except where otherwise noted, this item's licence is described as Attribution 2.0 UK: England & Wales