Heat Sources within the Greenland Ice Sheet: Dissipation, Temperate Paleo-Firn and Cryo-Hydrologic Warming

dc.contributor.utaustinauthorAndrews, L. C.en_US
dc.contributor.utaustinauthorCatania, G. A.en_US
dc.creatorLuthi, M. P.en_US
dc.creatorRyser, C.en_US
dc.creatorAndrews, L. C.en_US
dc.creatorCatania, G. A.en_US
dc.creatorFunk, M.en_US
dc.creatorHawley, R. L.en_US
dc.creatorHoffman, M. J.en_US
dc.creatorNeumann, T. A.en_US
dc.date.accessioned2016-09-23T18:06:30Z
dc.date.available2016-09-23T18:06:30Z
dc.date.issued2015-02en_US
dc.description.abstractIce temperature profiles from the Greenland Ice Sheet contain information on the deformation history, past climates and recent warming. We present full-depth temperature profiles from two drill sites on a flow line passing through Swiss Camp, West Greenland. Numerical modeling reveals that ice temperatures are considerably higher than would be expected from heat diffusion and dissipation alone. The possible causes for this extra heat are evaluated using a Lagrangian heat flow model. The model results reveal that the observations can be explained with a combination of different processes: enhanced dissipation (strain heating) in ice-age ice, temperate paleo-firn, and cryo-hydrologic warming in deep crevasses.en_US
dc.description.departmentEarth and Planetary Sciencesen_US
dc.description.sponsorshipSwiss National Science Foundation 200021_127197en_US
dc.description.sponsorshipUS-NSF OPP 0908156, OPP 0909454, ANT-0424589en_US
dc.description.sponsorshipNASA within the US Department of Energy Office of Scienceen_US
dc.identifierdoi:10.15781/T2CJ87M9B
dc.identifier.citationLüthi, M. P., C. Ryser, L. C. Andrews, G. A. Catania, M. Funk, R. L. Hawley, M. J. Hoffman, and T. A. Neumann. "Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming." The Cryosphere 9, no. 1 (Feb., 2015): 245-253.en_US
dc.identifier.doi10.5194/tc-9-245-2015en_US
dc.identifier.issn1994-0416en_US
dc.identifier.urihttp://hdl.handle.net/2152/41107
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialCryosphereen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectablation zoneen_US
dc.subjectwest greenlanden_US
dc.subjectfast-flowen_US
dc.subjectjakobshavns-isbraeen_US
dc.subjectdarken_US
dc.subjectregionen_US
dc.subjectmechanismsen_US
dc.subjectdeformationen_US
dc.subjectboreholesen_US
dc.subjectmotionen_US
dc.subjectlevelen_US
dc.subjectgeography, physicalen_US
dc.subjectgeosciences, multidisciplinaryen_US
dc.titleHeat Sources within the Greenland Ice Sheet: Dissipation, Temperate Paleo-Firn and Cryo-Hydrologic Warmingen_US
dc.typeArticleen_US

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