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dc.contributor.author Falaschi, Daniel
dc.contributor.author Bravo, Claudio
dc.contributor.author Masiokas, Mariano Hugo
dc.contributor.author Villalba, Ricardo
dc.contributor.author Rivera, Andrés
dc.date.available 2015-11-23T12:58:15Z
dc.date.issued 2013-02
dc.identifier.citation Falaschi, Daniel; Bravo, Claudio; Masiokas, Mariano Hugo; Villalba, Ricardo; Rivera, Andrés; First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America; Inst Arctic Alpine Res; Arctic Antarctic And Alpine Research; 45; 1; 2-2013; 19-28
dc.identifier.issn 1523-0430
dc.identifier.uri http://hdl.handle.net/11336/2867
dc.description.abstract We present the first glacier inventory of the Monte San Lorenzo region (47º35′S, 72º18′W) in the southern Patagonian Andes of Chile and Argentina. This region contains the largest and easternmost glaciers at these latitudes in South America. The inventory was developed using a combination of ASTER and Landsat ETM + scenes from 2005 and 2008, respectively, and a semi-automatic band ratio approach to map glacier ice. Manual corrections were applied to include debris-covered ice and ice in cast shadows. We inventoried 213 glaciers that cover a 2005/2008 total area of ca. 207 km2 and lie between 520 m and 3700 m in elevation. Landsat TM images acquired in 1985 and 2000 were subsequently used to assess changes in glacierized area over the 1985–2008 interval. Based on all available information, we determined an 18.6% reduction in the total glacier area since 1985. Glaciers smaller than 1 km2 have shown highly variable (0–100%) relative areal reduction, whereas the formation and growth of proglacial lakes promoted rapid recession of the, larger valley glaciers, which concentrate the major ice losses, representing ca. 32% of the total glacier area reduction. Glacier fragmentation has occurred for 50% of the ice bodies larger than 1 km2. These results agree with the generalized pattern of glacier retreat observed throughout the Patagonian Andes, but the lack of detailed meteorological and glaciological data in the area preclude a more refined analysis of the climate-glacier relationships and processes explaining the recent glacier trends.
dc.format application/pdf
dc.language.iso eng
dc.publisher Inst Arctic Alpine Res
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject GLACIER INVENTORY
dc.subject PATAGONIA
dc.subject REMOTE SENSING
dc.subject GLACIER CHANGES
dc.subject.classification Geografía Física
dc.subject.classification Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-03-30 10:35:44.97925-03
dc.journal.volume 45
dc.journal.number 1
dc.journal.pagination 19-28
dc.journal.pais Estados Unidos
dc.journal.ciudad Boulder, USA
dc.description.fil Fil: Falaschi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil Fil: Bravo, Claudio. Departamento de Geofísica. Universidad de Chile; Chile
dc.description.fil Fil: Masiokas, Mariano Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil Fil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil Fil: Rivera, Andrés. Centro de Estudios Científicos; Chile
dc.journal.title Arctic Antarctic And Alpine Research
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1657/1938-4246-45.1.19
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/1938-4246
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1657/1938-4246-45.1.19


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)