An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile)
- Autores
- García, Ayôn; Ulloa, Christopher; Amigo, Gonzalo; Milana, Juan Pablo; Medina, Catherine
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- An integral, glacial and periglacial, inventory of the cryosphere in the Atacama region in Chile was carried out to estimate the amount of frozen water reserves in this arid to hyper-arid region. The inventory was carried out with medium to high spatial resolution satellite images and resulted in a total of 168,908 ha of landforms with significant ice content in one of the most fragile Andean ecosystems: the semi-arid – hyper-arid zones. This study shows an integral mapping of the cryosphere including glaciers and ice-bearing periglacial landforms. The different ice landforms in the Atacama region shows a progressive change in the landforms containing ice responding to the northwards increase of aridity upon entry to the South American hyper-arid axis. The main change observed is that uncovered glaciers are not present north of 26.5°S, being replaced by creeping permafrost landforms. Uncovered glaciers may produce more water annually compared to other ice-bearing landforms, but they only represent 2.7% of the cryospheric area. However, cryoforms containing a mixture of ice, sediment and rock fragments could be more important as water reserves because of their large extensions that cover c. 97% of the total area of ice-bearing landforms mapped. It also shows that the water-supply potential of ice-bearing periglacial landforms could be much higher than that of the glaciers in arid zones. The comparison with the previous inventory of 1987 suggests a reduction of 34% of uncovered glaciers, which is consistent with the aridization process observed in almost all of northern Chile. These findings reinforce the fact that glaciers and other types of permanent ice-bearing landforms need to be inventoried together if the objective is to provide the society with a realistic view of the distribution of the cryospheric hydrological resources in desert regions.
Fil: García, Ayôn. Universidad de Atacama; Chile
Fil: Ulloa, Christopher. Universidad de Atacama; Chile
Fil: Amigo, Gonzalo. Universidad de Atacama; Chile
Fil: Milana, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Medina, Catherine. Universidad de Atacama; Chile - Materia
-
Arid Diagonal
Atacama
Cryosphere
Glaciers
Inventory
Permafrost - 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:11336/64866
Ver los metadatos del registro completo
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An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile)García, AyônUlloa, ChristopherAmigo, GonzaloMilana, Juan PabloMedina, CatherineArid DiagonalAtacamaCryosphereGlaciersInventoryPermafrosthttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1An integral, glacial and periglacial, inventory of the cryosphere in the Atacama region in Chile was carried out to estimate the amount of frozen water reserves in this arid to hyper-arid region. The inventory was carried out with medium to high spatial resolution satellite images and resulted in a total of 168,908 ha of landforms with significant ice content in one of the most fragile Andean ecosystems: the semi-arid – hyper-arid zones. This study shows an integral mapping of the cryosphere including glaciers and ice-bearing periglacial landforms. The different ice landforms in the Atacama region shows a progressive change in the landforms containing ice responding to the northwards increase of aridity upon entry to the South American hyper-arid axis. The main change observed is that uncovered glaciers are not present north of 26.5°S, being replaced by creeping permafrost landforms. Uncovered glaciers may produce more water annually compared to other ice-bearing landforms, but they only represent 2.7% of the cryospheric area. However, cryoforms containing a mixture of ice, sediment and rock fragments could be more important as water reserves because of their large extensions that cover c. 97% of the total area of ice-bearing landforms mapped. It also shows that the water-supply potential of ice-bearing periglacial landforms could be much higher than that of the glaciers in arid zones. The comparison with the previous inventory of 1987 suggests a reduction of 34% of uncovered glaciers, which is consistent with the aridization process observed in almost all of northern Chile. These findings reinforce the fact that glaciers and other types of permanent ice-bearing landforms need to be inventoried together if the objective is to provide the society with a realistic view of the distribution of the cryospheric hydrological resources in desert regions.Fil: García, Ayôn. Universidad de Atacama; ChileFil: Ulloa, Christopher. Universidad de Atacama; ChileFil: Amigo, Gonzalo. Universidad de Atacama; ChileFil: Milana, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Medina, Catherine. Universidad de Atacama; ChilePergamon-Elsevier Science Ltd2017-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/64866García, Ayôn; Ulloa, Christopher; Amigo, Gonzalo; Milana, Juan Pablo; Medina, Catherine; An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile); Pergamon-Elsevier Science Ltd; Quaternary International; 438; 5-2017; 4-191040-6182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2017.04.033info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1040618216310564info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:44:13Zoai:ri.conicet.gov.ar:11336/64866instacron: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:34982025-09-29 09:44:14.073CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) |
title |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) |
spellingShingle |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) García, Ayôn Arid Diagonal Atacama Cryosphere Glaciers Inventory Permafrost |
title_short |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) |
title_full |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) |
title_fullStr |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) |
title_full_unstemmed |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) |
title_sort |
An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile) |
dc.creator.none.fl_str_mv |
García, Ayôn Ulloa, Christopher Amigo, Gonzalo Milana, Juan Pablo Medina, Catherine |
author |
García, Ayôn |
author_facet |
García, Ayôn Ulloa, Christopher Amigo, Gonzalo Milana, Juan Pablo Medina, Catherine |
author_role |
author |
author2 |
Ulloa, Christopher Amigo, Gonzalo Milana, Juan Pablo Medina, Catherine |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Arid Diagonal Atacama Cryosphere Glaciers Inventory Permafrost |
topic |
Arid Diagonal Atacama Cryosphere Glaciers Inventory Permafrost |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
An integral, glacial and periglacial, inventory of the cryosphere in the Atacama region in Chile was carried out to estimate the amount of frozen water reserves in this arid to hyper-arid region. The inventory was carried out with medium to high spatial resolution satellite images and resulted in a total of 168,908 ha of landforms with significant ice content in one of the most fragile Andean ecosystems: the semi-arid – hyper-arid zones. This study shows an integral mapping of the cryosphere including glaciers and ice-bearing periglacial landforms. The different ice landforms in the Atacama region shows a progressive change in the landforms containing ice responding to the northwards increase of aridity upon entry to the South American hyper-arid axis. The main change observed is that uncovered glaciers are not present north of 26.5°S, being replaced by creeping permafrost landforms. Uncovered glaciers may produce more water annually compared to other ice-bearing landforms, but they only represent 2.7% of the cryospheric area. However, cryoforms containing a mixture of ice, sediment and rock fragments could be more important as water reserves because of their large extensions that cover c. 97% of the total area of ice-bearing landforms mapped. It also shows that the water-supply potential of ice-bearing periglacial landforms could be much higher than that of the glaciers in arid zones. The comparison with the previous inventory of 1987 suggests a reduction of 34% of uncovered glaciers, which is consistent with the aridization process observed in almost all of northern Chile. These findings reinforce the fact that glaciers and other types of permanent ice-bearing landforms need to be inventoried together if the objective is to provide the society with a realistic view of the distribution of the cryospheric hydrological resources in desert regions. Fil: García, Ayôn. Universidad de Atacama; Chile Fil: Ulloa, Christopher. Universidad de Atacama; Chile Fil: Amigo, Gonzalo. Universidad de Atacama; Chile Fil: Milana, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina Fil: Medina, Catherine. Universidad de Atacama; Chile |
description |
An integral, glacial and periglacial, inventory of the cryosphere in the Atacama region in Chile was carried out to estimate the amount of frozen water reserves in this arid to hyper-arid region. The inventory was carried out with medium to high spatial resolution satellite images and resulted in a total of 168,908 ha of landforms with significant ice content in one of the most fragile Andean ecosystems: the semi-arid – hyper-arid zones. This study shows an integral mapping of the cryosphere including glaciers and ice-bearing periglacial landforms. The different ice landforms in the Atacama region shows a progressive change in the landforms containing ice responding to the northwards increase of aridity upon entry to the South American hyper-arid axis. The main change observed is that uncovered glaciers are not present north of 26.5°S, being replaced by creeping permafrost landforms. Uncovered glaciers may produce more water annually compared to other ice-bearing landforms, but they only represent 2.7% of the cryospheric area. However, cryoforms containing a mixture of ice, sediment and rock fragments could be more important as water reserves because of their large extensions that cover c. 97% of the total area of ice-bearing landforms mapped. It also shows that the water-supply potential of ice-bearing periglacial landforms could be much higher than that of the glaciers in arid zones. The comparison with the previous inventory of 1987 suggests a reduction of 34% of uncovered glaciers, which is consistent with the aridization process observed in almost all of northern Chile. These findings reinforce the fact that glaciers and other types of permanent ice-bearing landforms need to be inventoried together if the objective is to provide the society with a realistic view of the distribution of the cryospheric hydrological resources in desert regions. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05 |
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/11336/64866 García, Ayôn; Ulloa, Christopher; Amigo, Gonzalo; Milana, Juan Pablo; Medina, Catherine; An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile); Pergamon-Elsevier Science Ltd; Quaternary International; 438; 5-2017; 4-19 1040-6182 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/64866 |
identifier_str_mv |
García, Ayôn; Ulloa, Christopher; Amigo, Gonzalo; Milana, Juan Pablo; Medina, Catherine; An inventory of cryospheric landforms in the arid diagonal of South America (high Central Andes, Atacama region, Chile); Pergamon-Elsevier Science Ltd; Quaternary International; 438; 5-2017; 4-19 1040-6182 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2017.04.033 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1040618216310564 |
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 |
Pergamon-Elsevier Science Ltd |
publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
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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1844613392497639424 |
score |
13.070432 |