Isotope Tracing of the Parana River, Argentina

Autores
Panarello, Hector Osvaldo; Dapeña, Cristina
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Rio de la Plata estuary is the collector of a vast drainage basin of about 3.1x106 km2 . There are many tributaries to the estuary but the Parana and Uruguay rivers directly discharge more than 99% of the average discharge (24 000 m3/s). The stable isotope composition of water in this estuary has been monitored since 1997. From 120 isotopic pairs, it could be established that 18O and 2H exhibit a cyclical pattern with a maximum in November and a minimum in May. Values correspond to the ITCZ position. When it is located near 8oN, the amount of precipitation over the basin decreases and hence the isotopic composition of both elements is more positive. Conversely, when the ITCZ moves southward, the pluviosity increases, leading to more negative δ18O and δ2H values. This isotopic signal is recordered with a delay of ca 4 month in the estuary. The derivate magnitude, deuterium excess, showed important variations, from 1 to δ18 per mille, with the higher values being related to positive ENSO (El Nino) phases and lower values to negative ENSO (La Nina). Despite the interactions with groundwater and physical processes along ca. 2800 km, the Parana River still reflects at its mouth all these climatic phenomena that control the δ2H and δ18O contents at its catchment areas.
Fil: Panarello, Hector Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
Fil: Dapeña, Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
Materia
Enso Phenomena
Deuterium Excess
Deuterium Oxygen-18
Tritium
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31710

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spelling Isotope Tracing of the Parana River, ArgentinaPanarello, Hector OsvaldoDapeña, CristinaEnso PhenomenaDeuterium ExcessDeuterium Oxygen-18Tritiumhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The Rio de la Plata estuary is the collector of a vast drainage basin of about 3.1x106 km2 . There are many tributaries to the estuary but the Parana and Uruguay rivers directly discharge more than 99% of the average discharge (24 000 m3/s). The stable isotope composition of water in this estuary has been monitored since 1997. From 120 isotopic pairs, it could be established that 18O and 2H exhibit a cyclical pattern with a maximum in November and a minimum in May. Values correspond to the ITCZ position. When it is located near 8oN, the amount of precipitation over the basin decreases and hence the isotopic composition of both elements is more positive. Conversely, when the ITCZ moves southward, the pluviosity increases, leading to more negative δ18O and δ2H values. This isotopic signal is recordered with a delay of ca 4 month in the estuary. The derivate magnitude, deuterium excess, showed important variations, from 1 to δ18 per mille, with the higher values being related to positive ENSO (El Nino) phases and lower values to negative ENSO (La Nina). Despite the interactions with groundwater and physical processes along ca. 2800 km, the Parana River still reflects at its mouth all these climatic phenomena that control the δ2H and δ18O contents at its catchment areas.Fil: Panarello, Hector Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; ArgentinaFil: Dapeña, Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; ArgentinaInternational Atomic Energy Agency2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31710Panarello, Hector Osvaldo; Dapeña, Cristina; Isotope Tracing of the Parana River, Argentina; International Atomic Energy Agency; IAEA Tecdoc; 1673; 5-2012; 1-201011-4289CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://inis.iaea.org/search/search.aspx?orig_q=RN:43048664info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:56Zoai:ri.conicet.gov.ar:11336/31710instacron: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 09:34:57.254CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Isotope Tracing of the Parana River, Argentina
title Isotope Tracing of the Parana River, Argentina
spellingShingle Isotope Tracing of the Parana River, Argentina
Panarello, Hector Osvaldo
Enso Phenomena
Deuterium Excess
Deuterium Oxygen-18
Tritium
title_short Isotope Tracing of the Parana River, Argentina
title_full Isotope Tracing of the Parana River, Argentina
title_fullStr Isotope Tracing of the Parana River, Argentina
title_full_unstemmed Isotope Tracing of the Parana River, Argentina
title_sort Isotope Tracing of the Parana River, Argentina
dc.creator.none.fl_str_mv Panarello, Hector Osvaldo
Dapeña, Cristina
author Panarello, Hector Osvaldo
author_facet Panarello, Hector Osvaldo
Dapeña, Cristina
author_role author
author2 Dapeña, Cristina
author2_role author
dc.subject.none.fl_str_mv Enso Phenomena
Deuterium Excess
Deuterium Oxygen-18
Tritium
topic Enso Phenomena
Deuterium Excess
Deuterium Oxygen-18
Tritium
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Rio de la Plata estuary is the collector of a vast drainage basin of about 3.1x106 km2 . There are many tributaries to the estuary but the Parana and Uruguay rivers directly discharge more than 99% of the average discharge (24 000 m3/s). The stable isotope composition of water in this estuary has been monitored since 1997. From 120 isotopic pairs, it could be established that 18O and 2H exhibit a cyclical pattern with a maximum in November and a minimum in May. Values correspond to the ITCZ position. When it is located near 8oN, the amount of precipitation over the basin decreases and hence the isotopic composition of both elements is more positive. Conversely, when the ITCZ moves southward, the pluviosity increases, leading to more negative δ18O and δ2H values. This isotopic signal is recordered with a delay of ca 4 month in the estuary. The derivate magnitude, deuterium excess, showed important variations, from 1 to δ18 per mille, with the higher values being related to positive ENSO (El Nino) phases and lower values to negative ENSO (La Nina). Despite the interactions with groundwater and physical processes along ca. 2800 km, the Parana River still reflects at its mouth all these climatic phenomena that control the δ2H and δ18O contents at its catchment areas.
Fil: Panarello, Hector Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
Fil: Dapeña, Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotopica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina
description The Rio de la Plata estuary is the collector of a vast drainage basin of about 3.1x106 km2 . There are many tributaries to the estuary but the Parana and Uruguay rivers directly discharge more than 99% of the average discharge (24 000 m3/s). The stable isotope composition of water in this estuary has been monitored since 1997. From 120 isotopic pairs, it could be established that 18O and 2H exhibit a cyclical pattern with a maximum in November and a minimum in May. Values correspond to the ITCZ position. When it is located near 8oN, the amount of precipitation over the basin decreases and hence the isotopic composition of both elements is more positive. Conversely, when the ITCZ moves southward, the pluviosity increases, leading to more negative δ18O and δ2H values. This isotopic signal is recordered with a delay of ca 4 month in the estuary. The derivate magnitude, deuterium excess, showed important variations, from 1 to δ18 per mille, with the higher values being related to positive ENSO (El Nino) phases and lower values to negative ENSO (La Nina). Despite the interactions with groundwater and physical processes along ca. 2800 km, the Parana River still reflects at its mouth all these climatic phenomena that control the δ2H and δ18O contents at its catchment areas.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
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/11336/31710
Panarello, Hector Osvaldo; Dapeña, Cristina; Isotope Tracing of the Parana River, Argentina; International Atomic Energy Agency; IAEA Tecdoc; 1673; 5-2012; 1-20
1011-4289
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31710
identifier_str_mv Panarello, Hector Osvaldo; Dapeña, Cristina; Isotope Tracing of the Parana River, Argentina; International Atomic Energy Agency; IAEA Tecdoc; 1673; 5-2012; 1-20
1011-4289
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://inis.iaea.org/search/search.aspx?orig_q=RN:43048664
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 International Atomic Energy Agency
publisher.none.fl_str_mv International Atomic Energy Agency
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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