Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S
- Autores
- Hoke, Gregory D.; Aranibar, Julieta Nelida; Viale, Maximiliano; Araneo, Diego Christian; Llano, Carina Lourdes
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Constraining the influence of different moisture sources across the flanks of mountain ranges isimportant for understanding tectonic, geomorphic, and paleoclimate problems at geologic timescales, aswell as evaluating climate change and water resources on human time scales. The stable isotope compositionsof stream waters and precipitation are an ideal tool for this task. This study reports the results of a2 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 2500mof relief from nine sites were analyzed for dD and d18O. In addition, 81 samples from Andean riverscollected 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 ~33S, 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 ~35S, river water compositions exhibit a strong winter influence. At 33S, 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 d18O estimates from pedogenic carbonates illustrates that carbonates capture the range of variability observed in modern precipitation and Rayleigh fractionation models.
Fil: Hoke, Gregory D.. Syracuse University;
Fil: Aranibar, Julieta Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina;
Fil: Viale, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina;
Fil: Araneo, Diego Christian. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina;
Fil: Llano, Carina Lourdes. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; - Materia
-
stable isotopes
precipitation
pedogenic carbonates
Andes - 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:11336/691
Ver los metadatos del registro completo
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Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°SHoke, Gregory D.Aranibar, Julieta NelidaViale, MaximilianoAraneo, Diego ChristianLlano, Carina Lourdesstable isotopesprecipitationpedogenic carbonatesAndeshttps://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.5Constraining the influence of different moisture sources across the flanks of mountain ranges isimportant for understanding tectonic, geomorphic, and paleoclimate problems at geologic timescales, aswell as evaluating climate change and water resources on human time scales. The stable isotope compositionsof stream waters and precipitation are an ideal tool for this task. This study reports the results of a2 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 2500mof relief from nine sites were analyzed for dD and d18O. In addition, 81 samples from Andean riverscollected 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 ~33S, 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 ~35S, river water compositions exhibit a strong winter influence. At 33S, 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 d18O estimates from pedogenic carbonates illustrates that carbonates capture the range of variability observed in modern precipitation and Rayleigh fractionation models.Fil: Hoke, Gregory D.. Syracuse University;Fil: Aranibar, Julieta Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina;Fil: Viale, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina;Fil: Araneo, Diego Christian. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina;Fil: Llano, Carina Lourdes. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales;Amer Geophysical Union2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/691Hoke, Gregory D.; Aranibar, Julieta Nelida; Viale, Maximiliano; Araneo, Diego Christian; Llano, Carina Lourdes; Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S; Amer Geophysical Union; Geochemistry Geophysics Geosystems; 14; 4-2013; 962-9781525-2027enginfo:eu-repo/semantics/altIdentifier/doi/10.1002/ggge.20045/abstractinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/ggge.20045/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:28Zoai:ri.conicet.gov.ar:11336/691instacron: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:34982025-09-03 09:59:29.297CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S |
title |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S |
spellingShingle |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S Hoke, Gregory D. stable isotopes precipitation pedogenic carbonates Andes |
title_short |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S |
title_full |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S |
title_fullStr |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S |
title_full_unstemmed |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S |
title_sort |
Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S |
dc.creator.none.fl_str_mv |
Hoke, Gregory D. Aranibar, Julieta Nelida Viale, Maximiliano Araneo, Diego Christian Llano, Carina Lourdes |
author |
Hoke, Gregory D. |
author_facet |
Hoke, Gregory D. Aranibar, Julieta Nelida Viale, Maximiliano Araneo, Diego Christian Llano, Carina Lourdes |
author_role |
author |
author2 |
Aranibar, Julieta Nelida Viale, Maximiliano Araneo, Diego Christian Llano, Carina Lourdes |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
stable isotopes precipitation pedogenic carbonates Andes |
topic |
stable isotopes precipitation pedogenic carbonates Andes |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.5 |
dc.description.none.fl_txt_mv |
Constraining the influence of different moisture sources across the flanks of mountain ranges isimportant for understanding tectonic, geomorphic, and paleoclimate problems at geologic timescales, aswell as evaluating climate change and water resources on human time scales. The stable isotope compositionsof stream waters and precipitation are an ideal tool for this task. This study reports the results of a2 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 2500mof relief from nine sites were analyzed for dD and d18O. In addition, 81 samples from Andean riverscollected 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 ~33S, 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 ~35S, river water compositions exhibit a strong winter influence. At 33S, 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 d18O estimates from pedogenic carbonates illustrates that carbonates capture the range of variability observed in modern precipitation and Rayleigh fractionation models. Fil: Hoke, Gregory D.. Syracuse University; Fil: Aranibar, Julieta Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina; Fil: Viale, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina; Fil: Araneo, Diego Christian. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias. Ambientales; Argentina; Fil: Llano, Carina Lourdes. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; |
description |
Constraining the influence of different moisture sources across the flanks of mountain ranges isimportant for understanding tectonic, geomorphic, and paleoclimate problems at geologic timescales, aswell as evaluating climate change and water resources on human time scales. The stable isotope compositionsof stream waters and precipitation are an ideal tool for this task. This study reports the results of a2 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 2500mof relief from nine sites were analyzed for dD and d18O. In addition, 81 samples from Andean riverscollected 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 ~33S, 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 ~35S, river water compositions exhibit a strong winter influence. At 33S, 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 d18O estimates from pedogenic carbonates illustrates that carbonates capture the range of variability observed in modern precipitation and Rayleigh fractionation models. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-04 |
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/11336/691 Hoke, Gregory D.; Aranibar, Julieta Nelida; Viale, Maximiliano; Araneo, Diego Christian; Llano, Carina Lourdes; Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S; Amer Geophysical Union; Geochemistry Geophysics Geosystems; 14; 4-2013; 962-978 1525-2027 |
url |
http://hdl.handle.net/11336/691 |
identifier_str_mv |
Hoke, Gregory D.; Aranibar, Julieta Nelida; Viale, Maximiliano; Araneo, Diego Christian; Llano, Carina Lourdes; Isotopic characterization of mountain precipitation along the eastern flank of the Andes between 32.5 ? 35°S; Amer Geophysical Union; Geochemistry Geophysics Geosystems; 14; 4-2013; 962-978 1525-2027 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1002/ggge.20045/abstract info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/ggge.20045/abstract |
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 |
Amer Geophysical Union |
publisher.none.fl_str_mv |
Amer Geophysical Union |
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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1842269582911340544 |
score |
13.13397 |