Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century
- Autores
- Tripaldi, Alfonsina; Zárate, Marcelo Arístides; Forman, Steven L.; Badger, Timothy; Doyle, Moira Evelina; Ciccioli, Patricia Lucia
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Drought episodes during the early–mid 20th century were recognized and described in several places around the world, with extreme dry conditions and widespread landscape denudation, like during the famous ‘Dust Bowl’ in North America. However, there is scant documentation of droughts in southern South America, particularly from the Pampas, and none based on the geological record. In this article, we provide clear evidence of aeolian reactivation and sand deposition in some areas of La Pampa and San Luis provinces, western Pampas (Argentina), during early–mid 20th century in response to drier conditions, probably amplified, like historic droughts in North America, by anthropogenic factors (e.g. significant population increase and agriculture expansion into a fragile environment). Evidence includes widespread bare sand blowouts, extensive surfaces with active sand migration, steep dune lee slopes, and sharp crests covered by weak soil development (A/C profile), accompanied by historical documents. Optically stimulated luminescence (OSL) ages on aeolian beds confirm mobilization and sedimentation by wind processes c. 95–60 yr BP. Considering the dominant (over 70%) austral spring–summer precipitation, it is possible the rainfall deficit in western Pampas was linked to positive sea surface temperature (SST) anomalies in the western subtropical South Atlantic Ocean (20–30°S and 30–50° W), according to significant canonical correlation between the precipitation field in subtropical South America and the Atlantic Ocean SST anomalies.
Fil: Tripaldi, Alfonsina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
Fil: Forman, Steven L.. University Of Chicago; Estados Unidos
Fil: Badger, Timothy. University Of Chicago; Estados Unidos
Fil: Doyle, Moira Evelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Ciccioli, Patricia Lucia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina - Materia
-
20 Th Century
Aeolian Record
Optically Stimulated Luminescence Dating
Pampas Dustbowl
South America
Western Pampas - 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:11336/4558
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Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th centuryTripaldi, AlfonsinaZárate, Marcelo ArístidesForman, Steven L.Badger, TimothyDoyle, Moira EvelinaCiccioli, Patricia Lucia20 Th CenturyAeolian RecordOptically Stimulated Luminescence DatingPampas DustbowlSouth AmericaWestern Pampashttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Drought episodes during the early–mid 20th century were recognized and described in several places around the world, with extreme dry conditions and widespread landscape denudation, like during the famous ‘Dust Bowl’ in North America. However, there is scant documentation of droughts in southern South America, particularly from the Pampas, and none based on the geological record. In this article, we provide clear evidence of aeolian reactivation and sand deposition in some areas of La Pampa and San Luis provinces, western Pampas (Argentina), during early–mid 20th century in response to drier conditions, probably amplified, like historic droughts in North America, by anthropogenic factors (e.g. significant population increase and agriculture expansion into a fragile environment). Evidence includes widespread bare sand blowouts, extensive surfaces with active sand migration, steep dune lee slopes, and sharp crests covered by weak soil development (A/C profile), accompanied by historical documents. Optically stimulated luminescence (OSL) ages on aeolian beds confirm mobilization and sedimentation by wind processes c. 95–60 yr BP. Considering the dominant (over 70%) austral spring–summer precipitation, it is possible the rainfall deficit in western Pampas was linked to positive sea surface temperature (SST) anomalies in the western subtropical South Atlantic Ocean (20–30°S and 30–50° W), according to significant canonical correlation between the precipitation field in subtropical South America and the Atlantic Ocean SST anomalies.Fil: Tripaldi, Alfonsina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; ArgentinaFil: Forman, Steven L.. University Of Chicago; Estados UnidosFil: Badger, Timothy. University Of Chicago; Estados UnidosFil: Doyle, Moira Evelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Ciccioli, Patricia Lucia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaSage Publications2013-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4558Tripaldi, Alfonsina; Zárate, Marcelo Arístides; Forman, Steven L.; Badger, Timothy; Doyle, Moira Evelina; et al.; Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century; Sage Publications; Holocene (sevenoaks); 23; 12; 12-2013; 1731-17460959-6836enginfo:eu-repo/semantics/altIdentifier/doi/10.1177/0959683613505338info:eu-repo/semantics/altIdentifier/url/http://hol.sagepub.com/content/23/12/1731.abstractinfo:eu-repo/semantics/altIdentifier/url/http://hol.sagepub.com/content/23/12/1731.abstracthttp://hol.sagepub.com/content/23/12/1731.abstractinfo:eu-repo/semantics/altIdentifier/issn/0959-6836info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:25:56Zoai:ri.conicet.gov.ar:11336/4558instacron: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 10:25:56.43CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century |
title |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century |
spellingShingle |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century Tripaldi, Alfonsina 20 Th Century Aeolian Record Optically Stimulated Luminescence Dating Pampas Dustbowl South America Western Pampas |
title_short |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century |
title_full |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century |
title_fullStr |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century |
title_full_unstemmed |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century |
title_sort |
Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century |
dc.creator.none.fl_str_mv |
Tripaldi, Alfonsina Zárate, Marcelo Arístides Forman, Steven L. Badger, Timothy Doyle, Moira Evelina Ciccioli, Patricia Lucia |
author |
Tripaldi, Alfonsina |
author_facet |
Tripaldi, Alfonsina Zárate, Marcelo Arístides Forman, Steven L. Badger, Timothy Doyle, Moira Evelina Ciccioli, Patricia Lucia |
author_role |
author |
author2 |
Zárate, Marcelo Arístides Forman, Steven L. Badger, Timothy Doyle, Moira Evelina Ciccioli, Patricia Lucia |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
20 Th Century Aeolian Record Optically Stimulated Luminescence Dating Pampas Dustbowl South America Western Pampas |
topic |
20 Th Century Aeolian Record Optically Stimulated Luminescence Dating Pampas Dustbowl South America Western Pampas |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Drought episodes during the early–mid 20th century were recognized and described in several places around the world, with extreme dry conditions and widespread landscape denudation, like during the famous ‘Dust Bowl’ in North America. However, there is scant documentation of droughts in southern South America, particularly from the Pampas, and none based on the geological record. In this article, we provide clear evidence of aeolian reactivation and sand deposition in some areas of La Pampa and San Luis provinces, western Pampas (Argentina), during early–mid 20th century in response to drier conditions, probably amplified, like historic droughts in North America, by anthropogenic factors (e.g. significant population increase and agriculture expansion into a fragile environment). Evidence includes widespread bare sand blowouts, extensive surfaces with active sand migration, steep dune lee slopes, and sharp crests covered by weak soil development (A/C profile), accompanied by historical documents. Optically stimulated luminescence (OSL) ages on aeolian beds confirm mobilization and sedimentation by wind processes c. 95–60 yr BP. Considering the dominant (over 70%) austral spring–summer precipitation, it is possible the rainfall deficit in western Pampas was linked to positive sea surface temperature (SST) anomalies in the western subtropical South Atlantic Ocean (20–30°S and 30–50° W), according to significant canonical correlation between the precipitation field in subtropical South America and the Atlantic Ocean SST anomalies. Fil: Tripaldi, Alfonsina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina Fil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina Fil: Forman, Steven L.. University Of Chicago; Estados Unidos Fil: Badger, Timothy. University Of Chicago; Estados Unidos Fil: Doyle, Moira Evelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinacion Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina Fil: Ciccioli, Patricia Lucia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina |
description |
Drought episodes during the early–mid 20th century were recognized and described in several places around the world, with extreme dry conditions and widespread landscape denudation, like during the famous ‘Dust Bowl’ in North America. However, there is scant documentation of droughts in southern South America, particularly from the Pampas, and none based on the geological record. In this article, we provide clear evidence of aeolian reactivation and sand deposition in some areas of La Pampa and San Luis provinces, western Pampas (Argentina), during early–mid 20th century in response to drier conditions, probably amplified, like historic droughts in North America, by anthropogenic factors (e.g. significant population increase and agriculture expansion into a fragile environment). Evidence includes widespread bare sand blowouts, extensive surfaces with active sand migration, steep dune lee slopes, and sharp crests covered by weak soil development (A/C profile), accompanied by historical documents. Optically stimulated luminescence (OSL) ages on aeolian beds confirm mobilization and sedimentation by wind processes c. 95–60 yr BP. Considering the dominant (over 70%) austral spring–summer precipitation, it is possible the rainfall deficit in western Pampas was linked to positive sea surface temperature (SST) anomalies in the western subtropical South Atlantic Ocean (20–30°S and 30–50° W), according to significant canonical correlation between the precipitation field in subtropical South America and the Atlantic Ocean SST anomalies. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-12 |
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/11336/4558 Tripaldi, Alfonsina; Zárate, Marcelo Arístides; Forman, Steven L.; Badger, Timothy; Doyle, Moira Evelina; et al.; Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century; Sage Publications; Holocene (sevenoaks); 23; 12; 12-2013; 1731-1746 0959-6836 |
url |
http://hdl.handle.net/11336/4558 |
identifier_str_mv |
Tripaldi, Alfonsina; Zárate, Marcelo Arístides; Forman, Steven L.; Badger, Timothy; Doyle, Moira Evelina; et al.; Geological evidence for a drought episode in the western Pampas (Argentina, South America) duringthe early–mid 20th century; Sage Publications; Holocene (sevenoaks); 23; 12; 12-2013; 1731-1746 0959-6836 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1177/0959683613505338 info:eu-repo/semantics/altIdentifier/url/http://hol.sagepub.com/content/23/12/1731.abstract info:eu-repo/semantics/altIdentifier/url/http://hol.sagepub.com/content/23/12/1731.abstracthttp://hol.sagepub.com/content/23/12/1731.abstract info:eu-repo/semantics/altIdentifier/issn/0959-6836 |
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 |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf |
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Sage Publications |
publisher.none.fl_str_mv |
Sage Publications |
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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 |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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