First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America
- Autores
- Falaschi, Daniel; Bravo, Claudio; Masiokas, Mariano Hugo; Villalba, Ricardo; Rivera, Andrés
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
Fil: Falaschi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Bravo, Claudio. Departamento de Geofísica. Universidad de Chile; Chile
Fil: Masiokas, Mariano Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Rivera, Andrés. Centro de Estudios Científicos; Chile - Materia
-
Glacier Inventory
Patagonia
Remote Sensing
Glacier Changes - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/2867
Ver los metadatos del registro completo
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First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South AmericaFalaschi, DanielBravo, ClaudioMasiokas, Mariano HugoVillalba, RicardoRivera, AndrésGlacier InventoryPatagoniaRemote SensingGlacier Changeshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We 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.Fil: Falaschi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Bravo, Claudio. Departamento de Geofísica. Universidad de Chile; ChileFil: Masiokas, Mariano Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Rivera, Andrés. Centro de Estudios Científicos; ChileInst Arctic Alpine Res2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2867Falaschi, 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; 19-281523-0430enginfo:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1657/1938-4246-45.1.19info:eu-repo/semantics/altIdentifier/url/1938-4246info:eu-repo/semantics/altIdentifier/doi/10.1657/1938-4246-45.1.19info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:36:44Zoai:ri.conicet.gov.ar:11336/2867instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:36:44.89CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America |
title |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America |
spellingShingle |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America Falaschi, Daniel Glacier Inventory Patagonia Remote Sensing Glacier Changes |
title_short |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America |
title_full |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America |
title_fullStr |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America |
title_full_unstemmed |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America |
title_sort |
First glacier inventory and recent changes in glacier area in the monte San Lorenzo region (47ºS), Southern Patagonian Andes, South America |
dc.creator.none.fl_str_mv |
Falaschi, Daniel Bravo, Claudio Masiokas, Mariano Hugo Villalba, Ricardo Rivera, Andrés |
author |
Falaschi, Daniel |
author_facet |
Falaschi, Daniel Bravo, Claudio Masiokas, Mariano Hugo Villalba, Ricardo Rivera, Andrés |
author_role |
author |
author2 |
Bravo, Claudio Masiokas, Mariano Hugo Villalba, Ricardo Rivera, Andrés |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Glacier Inventory Patagonia Remote Sensing Glacier Changes |
topic |
Glacier Inventory Patagonia Remote Sensing Glacier Changes |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
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. Fil: Falaschi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Bravo, Claudio. Departamento de Geofísica. Universidad de Chile; Chile Fil: Masiokas, Mariano Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Villalba, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Rivera, Andrés. Centro de Estudios Científicos; Chile |
description |
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. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-02 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/2867 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 1523-0430 |
url |
http://hdl.handle.net/11336/2867 |
identifier_str_mv |
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 1523-0430 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1657/1938-4246-45.1.19 info:eu-repo/semantics/altIdentifier/url/1938-4246 info:eu-repo/semantics/altIdentifier/doi/10.1657/1938-4246-45.1.19 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Inst Arctic Alpine Res |
publisher.none.fl_str_mv |
Inst Arctic Alpine Res |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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12.982451 |