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dc.contributor.author
Hooper, James
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Marx, Samuel K.
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May, Jan-Hendrik
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Lupo, Liliana Concepcion
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Kulemeyer, Julio José
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Pereira, Elizabeth de Los Angeles
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Seki, Osamu
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Heijnis, Henk
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Child, David
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Gadd, Patricia
dc.contributor.author
Zawadzki, Atun
dc.date.available
2021-08-20T02:17:25Z
dc.date.issued
2020-01-05
dc.identifier.citation
Hooper, James; Marx, Samuel K.; May, Jan-Hendrik; Lupo, Liliana Concepcion; Kulemeyer, Julio José; et al.; Dust deposition tracks late-Holocene shifts in monsoon activity and the increasing role of human disturbance in the Puna-Altiplano, northwest Argentina; Sage Publications Ltd; Holocene (Seven Oaks); 30; 4; 5-1-2020; 1-18
dc.identifier.issn
0959-6836
dc.identifier.uri
http://hdl.handle.net/11336/138573
dc.description.abstract
The Puna-Altiplano plateau represents a regionally significant dust source, which is critically located at the nexus between the tropical and sub-polar synoptic systems that dominate the South American climate. Dust emissions in this region would therefore be expected to be sensitive to changes in these systems, in particular the strength and position of the South American Summer Monsoon (SASM). Here, we present a late-Holocene multi-proxy study where changes in dust flux, reconstructed from a high-altitude peat mire, are examined in light of climate variability and human impacts. Results show that for most the 4300 cal. yr BP record, dust flux sensitively tracked changes in SASM activity. Prior to 2600 cal. yr BP relatively high dust flux implies dry conditions prevailed across the Puna-Altiplao in association with reduced SASM activity. The chemistry of dust deposited at this time matched the large endorheic basins on the Puna, which host ephemeral lakes and terminal fans, indicating these were actively supplying dust to the airstream. After 2600 cal. yr BP, SASM activity increased while dust flux decreased and the dust chemistry changed, collectively implying the shutting down of the Puna-Altiplano as a significant dust source. Dust flux increased after 1000 cal. yr BP during the ?Medieval Warm Period?, associated with a return to drier conditions and reactivation of dust sources across the endorheic basins of the Puna. Natural variability in dust flux was dwarfed, however, by the very significant increase in flux after 400 cal. yr BP following Spanish Colonisation and associated changing landuse practices. This finding attests to the globally significant role of humans on dust emissions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Sage Publications Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CLIMATE
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DUST
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HOLOCENE
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LANDUSE CHANGE
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MIRE
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PEAT
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PUNA-ALTIPLANO
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SOUTH AMERICA
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SOUTH AMERICAN SUMMER MONSOON
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Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Dust deposition tracks late-Holocene shifts in monsoon activity and the increasing role of human disturbance in the Puna-Altiplano, northwest Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-01-27T19:55:30Z
dc.journal.volume
30
dc.journal.number
4
dc.journal.pagination
1-18
dc.journal.pais
Estados Unidos
dc.journal.ciudad
London
dc.description.fil
Fil: Hooper, James. University Of Wollongong; Australia
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Fil: Marx, Samuel K.. University Of Wollongong; Australia
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Fil: May, Jan-Hendrik. University of Melbourne; Australia. University Of Wollongong; Australia
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Fil: Lupo, Liliana Concepcion. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Kulemeyer, Julio José. Universidad Nacional de Tucumán. Instituto de Datación y Arqueometría. - Universidad Nacional de Jujuy. Instituto de Datación y Arqueometría. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta-Jujuy. Instituto de Datación y Arqueometría; Argentina
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Fil: Pereira, Elizabeth de Los Angeles. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Seki, Osamu. Hokkaido University; Japón
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Fil: Heijnis, Henk. Australian Nuclear Science and Technology Organisation; Australia
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Fil: Child, David. Australian Nuclear Science and Technology Organisation; Australia
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Fil: Gadd, Patricia. Australian Nuclear Science and Technology Organisation; Australia
dc.description.fil
Fil: Zawadzki, Atun. Australian Nuclear Science and Technology Organisation; Australia
dc.journal.title
Holocene (Seven Oaks)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1177/0959683619895814
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.sagepub.com/doi/10.1177/0959683619895814
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