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dc.contributor.authorWagner, Till J. W.
dc.contributor.authorWadhams, P.
dc.contributor.authorBates, C. Richard
dc.contributor.authorElosegui, P.
dc.contributor.authorStern, A.
dc.contributor.authorVella, D.
dc.contributor.authorAbrahamsen, E.P.
dc.contributor.authorCrawford, A.
dc.contributor.authorNicholls, K.W.
dc.identifier.citationWagner , T J W , Wadhams , P , Bates , C R , Elosegui , P , Stern , A , Vella , D , Abrahamsen , E P , Crawford , A & Nicholls , K W 2014 , ' The "footloose" mechanism : iceberg decay from hydrostatic stresses ' , Geophysical Research Letters , vol. 41 , no. 15 , pp. 5522-5529 .
dc.identifier.otherPURE: 146703665
dc.identifier.otherPURE UUID: 986230e0-068e-423e-9afd-3d0132694ba4
dc.identifier.otherScopus: 84905327992
dc.identifier.otherORCID: /0000-0001-9147-7151/work/29591589
dc.identifier.otherWOS: 000341725200027
dc.descriptionAuthors are grateful to the Office of Naval Research High Latitude Program for supporting the University of Cambridge participation through the MIZ‐DRI project, grant N00014‐12‐1‐0130. T.J.W.W. further acknowledges ONR grant N00014‐13‐1‐0469.en
dc.description.abstractWe study a mechanism of iceberg breakup that may act together with the recognized melt and wave-induced decay processes. Our proposal is based on observations from a recent field experiment on a large ice island in Baffin Bay, East Canada. We observed that successive collapses of the overburden from above an unsupported wavecut at the iceberg waterline created a submerged foot fringing the berg. The buoyancy stresses induced by such a foot may be sufficient to cause moderate-sized bergs to break off from the main berg. A mathematical model is developed to test the feasibility of this mechanism. The results suggest that once the foot reaches a critical length, the induced stresses are sufficient to cause calving. The theoretically predicted maximum stable foot length compares well to the data collected in situ. Further, the model provides analytical expressions for the previously observed "rampart-moat" iceberg surface profiles.
dc.relation.ispartofGeophysical Research Lettersen
dc.rightsCopyright © 2014. American Geophysical Union. All Rights Reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at:
dc.subjectIceberg breakup observationsen
dc.subjectIceberg beam theoryen
dc.subjectIceberg modelingen
dc.subjectGE Environmental Sciencesen
dc.titleThe "footloose" mechanism : iceberg decay from hydrostatic stressesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.Centre for Ancient Environmental Studiesen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.St Andrews Sustainability Instituteen
dc.contributor.institutionUniversity of St Andrews.School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews.Earth and Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews.School of Geography & Sustainable Developmenten
dc.description.statusPeer revieweden

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