Glacier acceleration and thinning after ice shelf collapse in the Larsen B embayment, Antarctica

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dc.contributor.authorScambos, T. A.
dc.contributor.authorBohlander, J. A.
dc.contributor.authorShuman, Christopher
dc.contributor.authorSkvarca, P.
dc.date.accessioned2022-02-21T15:42:10Z
dc.date.available2022-02-21T15:42:10Z
dc.date.issued2004-09-22
dc.description.abstractIce velocities derived from five Landsat 7 images acquired between January 2000 and February 2003 show a two- to six-fold increase in centerline speed of four glaciers flowing into the now-collapsed section of the Larsen B Ice Shelf. Satellite laser altimetry from ICESat indicates the surface of Hektoria Glacier lowered by up to 38 ± 6 m in a six-month period beginning one year after the break-up in March 2002. Smaller elevation losses are observed for Crane and Jorum glaciers over a later 5-month period. Two glaciers south of the collapse area, Flask and Leppard, show little change in speed or elevation. Seasonal variations in speed preceding the large post-collapse velocity increases suggest that both summer melt percolation and changes in the stress field due to shelf removal play a major role in glacier dynamics.en_US
dc.description.sponsorshipThis work was supported by NASA grantNAG5-11308, and NSF grants OPP-9814550 and OPP-0338134, andInstituto Anta ́rtico Argentino.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2004GL020670en_US
dc.format.extent4 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2v89b-pt7q
dc.identifier.citationScambos, T. A., Bohlander, J. A., Shuman, C. A., and Skvarca, P. (2004), Glacier acceleration and thinning after ice shelf collapse in the Larsen B embayment, Antarctica, Geophys. Res. Lett., 31, L18402, doi:10.1029/2004GL020670.en_US
dc.identifier.urihttps://doi.org/10.1029/2004GL020670
dc.identifier.urihttp://hdl.handle.net/11603/24296
dc.language.isoen_USen_US
dc.publisherAGUen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleGlacier acceleration and thinning after ice shelf collapse in the Larsen B embayment, Antarcticaen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9606-767Xen_US

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