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A 22,000-year record of monsoonal precipitation from northern chile's atacama desert

Authordc.contributor.authorBetancourt, J. L. 
Authordc.contributor.authorLatorre, C. 
Authordc.contributor.authorRech, J. A. 
Authordc.contributor.authorQuade, J. 
Authordc.contributor.authorRylander, K. A. 
Admission datedc.date.accessioned2018-12-20T14:28:46Z
Available datedc.date.available2018-12-20T14:28:46Z
Publication datedc.date.issued2000
Cita de ítemdc.identifier.citationScience, Volumen 289, Issue 5484, 2018, Pages 1542-1546
Identifierdc.identifier.issn00368075
Identifierdc.identifier.other10.1126/science.289.5484.1542
Identifierdc.identifier.urihttp://repositorio.uchile.cl/handle/2250/156137
Abstractdc.description.abstractFossil rodent middens and wetland deposits from the central Atacama Desert (22°to 24°S) indicate increasing summer precipitation, grass cover, and groundwater levels from 16.2 to 10.5 calendar kiloyears before present (ky B.P.). Higher elevation shrubs and summer-flowering grasses expanded downslope across what is now the edge of Absolute Desert, a broad expanse now largely devoid of rainfall and vegetation. Paradoxically, this pluvial period coincided with the summer insolation minimum and reduced adiabatic heating over the central Andes. Summer precipitation over the central Andes and central Atacama may depend on remote teleconnections between seasonal insolation forcing in both hemispheres, the Asian monsoon, and Pacific sea surface temperature gradients. A less pronounced episode of higher groundwater levels in the central Atacama from 8 to 3 ky B.P. conflicts with an extreme lowstand of Lake Titicaca, indicating either different climatic forcing or different response times and se
Lenguagedc.language.isoen
Publisherdc.publisherAmerican Association for the Advancement of Science
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
Sourcedc.sourceScience
Keywordsdc.subjectMultidisciplinary
Títulodc.titleA 22,000-year record of monsoonal precipitation from northern chile's atacama desert
Document typedc.typeArtículo de revista
Catalogueruchile.catalogadorSCOPUS
Indexationuchile.indexArtículo de publicación SCOPUS
uchile.cosechauchile.cosechaSI


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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile