Mostrar el registro sencillo del ítem
dc.contributor.author
Hoke, Gregory D.
dc.contributor.author
Aranibar, Julieta Nelida
dc.contributor.author
Viale, Maximiliano
dc.contributor.author
Araneo, Diego Christian
dc.contributor.author
Llano, Carina
dc.date.available
2015-11-23T12:47:17Z
dc.date.issued
2013-04
dc.identifier.citation
Hoke, Gregory D.; Aranibar, Julieta Nelida; Viale, Maximiliano; Araneo, Diego Christian; Llano, Carina; Seasonal moisture sources and the isotopic composition of precipitation, rivers, and carbonates across the Andes at 32º-35.5°S; American Geophysical Union; Geochemistry Geophysics Geosystems; 14; 4; 4-2013; 962-978
dc.identifier.issn
1525-2027
dc.identifier.uri
http://hdl.handle.net/11336/2862
dc.description.abstract
Constraining the influence of different moisture sources across the flanks of mountain ranges is important for understanding tectonic, geomorphic, and paleoclimate problems at geologic timescales, as well as evaluating climate change and water resources on human time scales. The stable isotope compositions of stream waters and precipitation are an ideal tool for this task. This study reports the results of a 2 year monthly precipitation sampling campaign on the eastern flank of the Andes in the Mendoza Province of Argentina, which began in September 2008. A total of 104 precipitation samples spanning some 2500 m of relief from nine sites were analyzed for δD and δ18O. In addition, 81 samples from Andean rivers collected on both sides of the range in 2002 and 2007 were analyzed. We employ a Rayleigh isotope fractionation modeling approach to explore spatial and temporal variations in precipitation and river water compositions. The results indicate that precipitation on the eastern slopes of the Andes at ~33°S, at elevations above 2 km, is largely derived from a westerly, Pacific-source component and a mixture of easterly and westerly sources below 2 km. Further south at ~35°S, river water compositions exhibit a strong winter influence. At 33°S, rivers have an isotopic minimum of ~ −18? across the core of the range, which has an average elevation of 4000 m, and are topographically offset from similar isotopic values of precipitation by +1000 m. Comparison of precipitation and river water data with temperature-corrected δ18O estimates from pedogenic carbonates illustrates that carbonates capture the range of variability observed in modern precipitation and Rayleigh fractionation models.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
dc.rights
info:eu-repo/semantics/openAccess
dc.rights
Atribución-NoComercial-CompartirIgual 2.5 Argentina (CC BY-NC-SA 2.5 AR)
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Stable Isotopes
dc.subject
Precipitation
dc.subject
Rivbers
dc.subject
Pedogenic Carbonate
dc.subject
Andes
dc.subject
South America
dc.subject.classification
Geociencias multidisciplinaria
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Seasonal moisture sources and the isotopic composition of precipitation, rivers, and carbonates across the Andes at 32º-35.5°S
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
14
dc.journal.number
4
dc.journal.pagination
962-978
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Hoke, Gregory D.. Syracuse University. Department of Earth Sciences; Estados Unidos
dc.description.fil
Fil: Aranibar, Julieta Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
dc.description.fil
Fil: Viale, Maximiliano. Universidad de Chile. Departamento de Geofísica. Facultad de Ciencias Físicas y Matemáticas; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Araneo, Diego Christian. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Llano, Carina. Museo de Historia Natural de San Rafael. Departamento de Antropología; Argentina
dc.journal.title
Geochemistry Geophysics Geosystems
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1002/ggge.20045
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/ggge.20045
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/ggge.20045/abstract
Archivos asociados