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dc.contributor.authorRyan, Jonathan C.
dc.contributor.authorSessions, Martin
dc.contributor.authorWilson, Ryan
dc.contributor.authorWündrich, Olaf
dc.contributor.authorHubbard, Alun L.
dc.date.accessioned2018-08-08T08:40:47Z
dc.date.available2018-08-08T08:40:47Z
dc.date.issued2018-05-01
dc.description.abstractThe Patagonian Icefields, which straddle the Andes below 46°S, are two of the most sensitive ice masses on Earth to climate change. However, recent mass loss from the icefields along with its spatial and temporal variability is not well-constrained. Here we determine surface elevation changes of Benito Glacier, a 163 km2 outlet glacier draining the western flank of the North Patagonian Icefield, using a combination of field and satellite-derived elevation data acquired between 1973 and 2017. Our results demonstrate that just below the equilibrium line the glacier dramatically thinned by 133 m in the past 44 years, equivalent to a mean rate of 3.0 ± 0.2 m a−1. We also find that surface lowering was temporally variable, characterized by a hiatus between 2000 and 2013, and a subsequent increase up to 7.7 ± 3.0 m a−1 between 2013 and 2017. Analysis of Benito Glacier's flow regime throughout the period indicates that the observed surface lowering was caused by negative surface mass balance, rather than dynamic thinning. The high rate of surface lowering observed over the past half a decade highlights the extreme sensitivity of mid-latitude glaciers to recent atmospheric forcing.en_US
dc.descriptionSource at <a href= https://doi.org/10.3389/feart.2018.00047> https://doi.org/10.3389/feart.2018.00047</a>.en_US
dc.identifier.citationRyan, J.C., Sessions, M., Wilson, R., Wündrich, O. & Hubbard, A. (2018). Rapid Surface Lowering of Benito Glacier, Northern Patagonian Icefield. Frontiers in Earth Science, 6(47), 1-9. https://doi.org/10.3389/feart.2018.00047.en_US
dc.identifier.cristinIDFRIDAID 1583534
dc.identifier.doi10.3389/feart.2018.00047
dc.identifier.issn2296-6463
dc.identifier.urihttps://hdl.handle.net/10037/13368
dc.language.isoengen_US
dc.relation.journalFrontiers in Earth Science
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/.en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi, glasiologi: 465en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology, glaciology: 465en_US
dc.subjectNorthern Patagonian Icefielden_US
dc.subjectPatagoniaen_US
dc.subjectMountain glaciersen_US
dc.subjectClimate changeen_US
dc.subjectRemote sensingen_US
dc.subjectSurface mass balanceen_US
dc.subjectSurface loweringen_US
dc.subjectGPSen_US
dc.titleRapid Surface Lowering of Benito Glacier, Northern Patagonian Icefielden_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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