Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition

The Paraná River, the second in discharge in South America after the Amazon River and the fifth all over the world, releases an average of more than 17 000 m3 s-1 into the Del Plata Estuary. In order to assess the causes of variations in its stable isotope composition, 120 monthly grab samples of th...

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Publicado:	2009
Materias:	Deuterium excess ENSO ITCZ Paraná River Stable isotopes Catchments Deuterium Hydrogen Isotopes Moisture Nickel compounds Oxygen All over the worlds Amazon rivers Buenos aires , argentina Evaporation processes Inter tropical convergence zones Isotope compositions Meteorological phenomenons Periodic variations Positive correlations South america Transit times Rivers El Nino-Southern Oscillation hydrochemistry hydrogen isotope intertropical convergence zone isotopic composition nitrogen isotope oxygen isotope stable isotope Parana River South America
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221694_v365_n1-2_p105_Panarello http://hdl.handle.net/20.500.12110/paper_00221694_v365_n1-2_p105_Panarello
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00221694_v365_n1-2_p105_Panarello
record_format	dspace
spelling	paper:paper_00221694_v365_n1-2_p105_Panarello2023-06-08T14:46:52Z Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition Deuterium excess ENSO ITCZ Paraná River Stable isotopes Catchments Deuterium Hydrogen Isotopes Moisture Nickel compounds Oxygen All over the worlds Amazon rivers Buenos aires , argentina ENSO Evaporation processes Inter tropical convergence zones Isotope compositions ITCZ Meteorological phenomenons Periodic variations Positive correlations South america Stable isotopes Transit times Rivers El Nino-Southern Oscillation hydrochemistry hydrogen isotope intertropical convergence zone isotopic composition nitrogen isotope oxygen isotope stable isotope Parana River South America The Paraná River, the second in discharge in South America after the Amazon River and the fifth all over the world, releases an average of more than 17 000 m3 s-1 into the Del Plata Estuary. In order to assess the causes of variations in its stable isotope composition, 120 monthly grab samples of the Paraná River, acquired on a period of 10 years at the river mouth, near Ciudad Universitaria, Buenos Aires, Argentina have been analysed for oxygen and hydrogen stable isotopes. Both, 2H and 18O showed periodic variations (δ18O between -7‰ and -3‰; δ2H between -44‰ and -15‰) that follow, shifted in ca. 4 months (average transit time of the river), the southward excursions of the intertropical convergence zone (ITCZ). Deuterium excess values (δ2H - 8δ18O) also exhibited large variations (3-18‰) and showed a positive correlation with the El Niño South Oscillation Phenomenon (ENSO) index. ENSO affects the kinetic of the evaporation process of water and modifies the degree in which ITCZ shifts southwards capturing variable amounts of deuterium-rich recycled moisture from the Amazon's basin, then precipitating on the catchment's areas of the Paraná River. © 2008 Elsevier B.V. All rights reserved. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221694_v365_n1-2_p105_Panarello http://hdl.handle.net/20.500.12110/paper_00221694_v365_n1-2_p105_Panarello
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Deuterium excess ENSO ITCZ Paraná River Stable isotopes Catchments Deuterium Hydrogen Isotopes Moisture Nickel compounds Oxygen All over the worlds Amazon rivers Buenos aires , argentina ENSO Evaporation processes Inter tropical convergence zones Isotope compositions ITCZ Meteorological phenomenons Periodic variations Positive correlations South america Stable isotopes Transit times Rivers El Nino-Southern Oscillation hydrochemistry hydrogen isotope intertropical convergence zone isotopic composition nitrogen isotope oxygen isotope stable isotope Parana River South America
spellingShingle	Deuterium excess ENSO ITCZ Paraná River Stable isotopes Catchments Deuterium Hydrogen Isotopes Moisture Nickel compounds Oxygen All over the worlds Amazon rivers Buenos aires , argentina ENSO Evaporation processes Inter tropical convergence zones Isotope compositions ITCZ Meteorological phenomenons Periodic variations Positive correlations South america Stable isotopes Transit times Rivers El Nino-Southern Oscillation hydrochemistry hydrogen isotope intertropical convergence zone isotopic composition nitrogen isotope oxygen isotope stable isotope Parana River South America Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition
topic_facet	Deuterium excess ENSO ITCZ Paraná River Stable isotopes Catchments Deuterium Hydrogen Isotopes Moisture Nickel compounds Oxygen All over the worlds Amazon rivers Buenos aires , argentina ENSO Evaporation processes Inter tropical convergence zones Isotope compositions ITCZ Meteorological phenomenons Periodic variations Positive correlations South america Stable isotopes Transit times Rivers El Nino-Southern Oscillation hydrochemistry hydrogen isotope intertropical convergence zone isotopic composition nitrogen isotope oxygen isotope stable isotope Parana River South America
description	The Paraná River, the second in discharge in South America after the Amazon River and the fifth all over the world, releases an average of more than 17 000 m3 s-1 into the Del Plata Estuary. In order to assess the causes of variations in its stable isotope composition, 120 monthly grab samples of the Paraná River, acquired on a period of 10 years at the river mouth, near Ciudad Universitaria, Buenos Aires, Argentina have been analysed for oxygen and hydrogen stable isotopes. Both, 2H and 18O showed periodic variations (δ18O between -7‰ and -3‰; δ2H between -44‰ and -15‰) that follow, shifted in ca. 4 months (average transit time of the river), the southward excursions of the intertropical convergence zone (ITCZ). Deuterium excess values (δ2H - 8δ18O) also exhibited large variations (3-18‰) and showed a positive correlation with the El Niño South Oscillation Phenomenon (ENSO) index. ENSO affects the kinetic of the evaporation process of water and modifies the degree in which ITCZ shifts southwards capturing variable amounts of deuterium-rich recycled moisture from the Amazon's basin, then precipitating on the catchment's areas of the Paraná River. © 2008 Elsevier B.V. All rights reserved.
title	Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition
title_short	Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition
title_full	Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition
title_fullStr	Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition
title_full_unstemmed	Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition
title_sort	large scale meteorological phenomena, enso and itcz, define the paraná river isotope composition
publishDate	2009
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221694_v365_n1-2_p105_Panarello http://hdl.handle.net/20.500.12110/paper_00221694_v365_n1-2_p105_Panarello
_version_	1768543310860779520

Large scale meteorological phenomena, ENSO and ITCZ, define the Paraná River isotope composition

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