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dc.contributor.authorAmundson, Jason M.
dc.contributor.authorGuttenberg, Nicolas
dc.contributor.authorAbbott, Dorian S.
dc.contributor.authorBurton, Justin C.
dc.contributor.authorCathles, L. M.
dc.contributor.authorMacayeal, Douglas R.
dc.contributor.authorZhang, Wendy W.
dc.date.accessioned2020-10-08T22:31:41Z
dc.date.available2020-10-08T22:31:41Z
dc.date.issued2011
dc.identifier.citationGuttenberg, N., Abbot, D. S., Amundson, J. M., Burton, J. C., Mac Cathles, L., MacAYEAL, D. R., & Zhang, W. W. (2011). A computational investigation of iceberg capsize as a driver of explosive ice-shelf disintegration. Annals of glaciology, 52(59), 51-59.en_US
dc.identifier.issn1727-5644
dc.identifier.issn0260-3055
dc.identifier.urihttp://hdl.handle.net/11122/11310
dc.description.abstractPotential energy released from the capsize of ice-shelf fragments (icebergs) is the immediate driver of the brief explosive phase of ice-shelf disintegration along the Antarctic Peninsula (e.g. the Larsen A, Larsen B and Wilkins ice shelves). The majority of this energy powers the rapidly expanding plume of ice-shelf fragments that expands outward into the open ocean; a smaller fraction of this energy goes into surface gravity waves and other dynamic interactions between ice and water that can sustain the continued fragmentation and break-up of the original ice shelf. As an initial approach to the investigation of ice-shelf fragment capsize in ice-shelf collapse, we develop a simple conceptual model involving ideal rectangular icebergs, initially in unstable or metastable orientations, which are assembled into a tightly packed mass that subsequently disassembles via massed capsize. Computations based on this conceptual model display phenomenological similarity to aspects of real ice-shelf collapse. A promising result of the conceptual model presented here is a description of how iceberg aspect ratio and its statistical variance, the two parameters related to ice-shelf fracture patterns, influence the enabling conditions to be satisfied by slow-acting processes (e.g. environmentally driven melting) that facilitate ice-shelf disintegration.en_US
dc.description.sponsorshipThis work is supported by the US National Science Foundation under grants ANT-0944193, OPP-0838811 and CMG-0934534. D.S. Abbot was supported by the T.C. Chamberlin Fellowship of the University of Chicago and the Canadian Institute for Advanced Research. We thank reviewers J. Johnson and T. Scambos and scientific editor L. Stearns for substantial help in clarifying the work presented here. The first author innovated the methods and performed the computations presented here. Co-authors, listed in alphabetical order, had significant but supportive roles.en_US
dc.language.isoenen_US
dc.publisherInternational Glaciology Societyen_US
dc.sourceAnnals of Glaciologyen_US
dc.subjectIce-shelf disintegrationen_US
dc.subjectIce-shelf collapseen_US
dc.subjectice-shelf fragment capsizeen_US
dc.subjecticeberg capsizeen_US
dc.titleA computational investigation of iceberg capsize as a driver of explosive ice-shelf disintegration.en_US
dc.typeArticleen_US
dc.description.peerreviewYesen_US
refterms.dateFOA2020-10-08T22:31:42Z
dc.identifier.journalAnnals of Glaciologyen_US


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