Mass loss of Larsen B tributary glaciers (Antarctic Peninsula) unabated since 2002

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dc.contributor.authorBerthier, Etienne
dc.contributor.authorScambos, Ted A.
dc.contributor.authorShuman, Christopher
dc.date.accessioned2022-02-23T13:59:31Z
dc.date.available2022-02-23T13:59:31Z
dc.date.issued2012-07-10
dc.description.abstractIce mass loss continues at a high rate among the large glacier tributaries of the Larsen B Ice Shelf following its disintegration in 2002. We evaluate recent mass loss by mapping elevation changes between 2006 and 2010/11 using differencing of digital elevation models (DEMs). The measurement accuracy of these elevation changes is confirmed by a ‘null test’, subtracting DEMs acquired within a few weeks. The overall 2006–2010/11 mass loss rate (9.0 ± 2.1 Gt a⁻¹) is similar to the 2001/02–2006 rate (8.8 ± 1.6 Gt a⁻¹), derived using DEM differencing and laser altimetry. This unchanged overall loss masks a varying pattern of thinning and ice loss for individual glacier basins. On Crane Glacier, the thinning pulse, initially greatest near the calving front, is now broadening and migrating upstream. The largest losses are now observed for the Hektoria/Green glacier basin, having increased by 33% since 2006. Our method has enabled us to resolve large residual uncertainties in the Larsen B sector and confirm its state of ongoing rapid mass loss.en_US
dc.description.sponsorshipWe thank G. Durand, B. Kulessa and four anonymous referees for their comments on earlier versions of the paper. EB acknowledges support from CNES (TOSCA and ISIS proposals), PNTS, and ANR-09-SYSC-001. TAS acknowledges support from NSF-OPP, ANT-0732921, and NASA NNX10AR76G grants. CAS was supported by grants from the NASA Cryospheric Sciences Program. SPOT5 HRS data were provided at no cost by CNES through the SPIRIT project. ASTER data were provided at no cost by NASA/USGS through the Global Land Ice Measurements from Space (GLIMS) project.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2012GL051755en_US
dc.format.extent6 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2aaom-gaxn
dc.identifier.citationBerthier, E., Scambos, T. A., and Shuman, C. A. (2012), Mass loss of Larsen B tributary glaciers (Antarctic Peninsula) unabated since 2002, Geophys. Res. Lett., 39, L13501, doi:10.1029/2012GL051755.en_US
dc.identifier.urihttps://doi.org/10.1029/2012GL051755
dc.identifier.urihttp://hdl.handle.net/11603/24311
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.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.en_US
dc.titleMass loss of Larsen B tributary glaciers (Antarctic Peninsula) unabated since 2002en_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9606-767Xen_US

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