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dc.contributor.authorFalaschi, Daniel
dc.contributor.authorLenzano, María Gabriela
dc.contributor.authorVillalba, Ricardo
dc.contributor.authorBolch, Tobias
dc.contributor.authorRivera, Andrés
dc.contributor.authorLo Vecchio, Andrés
dc.date.accessioned2019-12-16T16:30:03Z
dc.date.available2019-12-16T16:30:03Z
dc.date.issued2019-12-11
dc.identifier.citationFalaschi , D , Lenzano , M G , Villalba , R , Bolch , T , Rivera , A & Lo Vecchio , A 2019 , ' Six decades (1958–2018) of geodetic glacier mass balance in Monte San Lorenzo, Patagonian Andes ' , Frontiers in Earth Science , vol. 7 , 326 . https://doi.org/10.3389/feart.2019.00326en
dc.identifier.issn2296-6463
dc.identifier.otherPURE: 264471744
dc.identifier.otherPURE UUID: eeec881b-822c-4b41-bddf-e1be0ad6eeb2
dc.identifier.otherRIS: urn:BEC94A0F3CF828F6C3D41F9449E0FBCD
dc.identifier.otherORCID: /0000-0002-8201-5059/work/66398494
dc.identifier.otherScopus: 85077251628
dc.identifier.otherWOS: 000504216200001
dc.identifier.urihttps://hdl.handle.net/10023/19140
dc.descriptionThis research was funded by the Agencia Nacional de Promoción Científica y Técnica (Grants PICT 2007-0379 and PICT 2016-1282). RV was partially supported by the Foundation BNP-Paribas through THEMES project. AR acknowledges FONDECYT 1171832 and CECs.en
dc.description.abstractA full understanding of glacier changes in the Patagonian Andes over decadal to century time-scales is presently limited by a lack of detailed and appropriate long-term observations. Here, we present geodetic mass and area changes of three valley glaciers from Monte San Lorenzo derived from stereo aerial photos, the Shuttle Radar Topography Mission (SRTM) and satellite imagery (SPOT5 and Pleiades) spanning four periods from 1958 to 2018. Our results indicate that net mass balance was negative throughout the six decades, with a mean mass loss of −1.35 ± 0.08 m w.e. a–1 and a total glacier area loss of 14.2 ± 0.7 km2 (23 ± 1% or 0.40 ± 0.02% a–1). The period 1981–2000 had the most negative mass budget, with an area-averaged mass loss of 1.67 ± 0.11 m w.e. a–1 and a maximum loss of −2.23 ± 0.07 m w.e. a–1 at San Lorenzo Sur glacier. Over the periods of 2000–2012 and 2012–2018, the mass budget of these three glaciers remained virtually unchanged at −1.37 ± 0.06 and −1.36 ± 0.17 m w.e. a–1, respectively. To place these results into a broader geographical context, the mass balance of a further 15 glaciers from around the Monte San Lorenzo massif was determined from 2000 onwards. This wider analysis reveals a period of reduced mass loss of −0.13 ± 0.21 m w.e. a–1 from 2012 to 2018 after a period of enhanced mass loss of −0.31 ± 0.16 m w.e. a–1 between 2000 and 2012. We find that increasing air temperatures coupled with diminishing precipitation across the region explains the observed patterns and are the main drivers of the negative mass budget. Furthermore, increased calving and melting into recently formed proglacial lakes has further enhanced mass loss at some lake-terminating glaciers.
dc.format.extent20
dc.language.isoeng
dc.relation.ispartofFrontiers in Earth Scienceen
dc.rightsCopyright © 2019 Falaschi, Lenzano, Villalba, Bolch, Rivera and Lo Vecchio. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en
dc.subjectGeodetic mass balanceen
dc.subjectGlacier retreaten
dc.subjectGlacial lakeen
dc.subjectMonte San Lorenzoen
dc.subjectPatagonian Andesen
dc.subjectGE Environmental Sciencesen
dc.subjectNDASen
dc.subject.lccGEen
dc.titleSix decades (1958–2018) of geodetic glacier mass balance in Monte San Lorenzo, Patagonian Andesen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Geography & Sustainable Developmenten
dc.contributor.institutionUniversity of St Andrews. Bell-Edwards Geographic Data Instituteen
dc.identifier.doihttps://doi.org/10.3389/feart.2019.00326
dc.description.statusPeer revieweden


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