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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
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Remote Sensing
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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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