Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I

New data on the presence of 129I in seawater in the Southern Hemisphere measured by Accelerator Mass Spectrometry (AMS) is presented. The samples were collected in 2014 along the Namibian coast during a cruise organised by the National Marine Information and Research Centre (NatMIRC), the national l...

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Autores: López Gutiérrez, José María, Louw, Deon C., Rožmarić, Martina, Lérida Toro, Victoria
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/148074
Acceso en línea:https://hdl.handle.net/11441/148074
https://doi.org/10.1016/j.chemosphere.2020.129065
Access Level:acceso abierto
Palabra clave:Accelerator mass spectrometry (AMS)
Northern Benguela upwelling system (nBUS)
Iodine-129
Uranium-236
Southern hemisphere
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spelling Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129ILópez Gutiérrez, José MaríaLouw, Deon C.Rožmarić, MartinaLérida Toro, VictoriaAccelerator mass spectrometry (AMS)Northern Benguela upwelling system (nBUS)Iodine-129Uranium-236Southern hemisphereNew data on the presence of 129I in seawater in the Southern Hemisphere measured by Accelerator Mass Spectrometry (AMS) is presented. The samples were collected in 2014 along the Namibian coast during a cruise organised by the National Marine Information and Research Centre (NatMIRC), the national laboratories of the Ministry of Fisheries and Marine Resources (MFMR) in Namibia, and the IAEA Environment Laboratories (IAEA NAEL) in Monaco. The Benguela upwelling system is known as one of the most important marine upwelling regions in the world. Strong winds induce an offshore transport of surface seawater which is substituted by cool subsurface water inshore. As this water is nutrient-rich, which leads to high primary productivity, the Benguela upwelling system has a very important role as a fishing production area. The 129I concentrations in samples were between (0.66 ± 0.14) × 107 and (1.45 ± 0.30) × 107 atoms/kg. The highest 129I concentrations were found in the offshore surface samples. Deep-sea and inshore samples contained lower 129I concentrations, possibly as an effect of the upwelling process. A comparison with previously published studies suggests that the presence of 129I in the northern Benguela upwelling system (nBUS), is mainly due to the impact of nuclear weapons global fallout, without any evident impact of nuclear fuel reprocessing.Ministerio de Ciencia, Innovación y Universidades PGC2018-094546-B-I00ScienceDirectFísica Aplicada IMinisterio de Ciencia, Innovación y Universidades (MICINN). España2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/148074https://doi.org/10.1016/j.chemosphere.2020.129065reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésChemosphere, 265.PGC2018-094546-B-I00https://www.sciencedirect.com/science/article/pii/S0045653520332628info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1480742026-06-17T12:51:07Z
dc.title.none.fl_str_mv Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
title Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
spellingShingle Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
López Gutiérrez, José María
Accelerator mass spectrometry (AMS)
Northern Benguela upwelling system (nBUS)
Iodine-129
Uranium-236
Southern hemisphere
title_short Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
title_full Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
title_fullStr Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
title_full_unstemmed Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
title_sort Tracing the upwelling process in the northern Benguela upwelling system (nBUS) by 129I
dc.creator.none.fl_str_mv López Gutiérrez, José María
Louw, Deon C.
Rožmarić, Martina
Lérida Toro, Victoria
author López Gutiérrez, José María
author_facet López Gutiérrez, José María
Louw, Deon C.
Rožmarić, Martina
Lérida Toro, Victoria
author_role author
author2 Louw, Deon C.
Rožmarić, Martina
Lérida Toro, Victoria
author2_role author
author
author
dc.contributor.none.fl_str_mv Física Aplicada I
Ministerio de Ciencia, Innovación y Universidades (MICINN). España
dc.subject.none.fl_str_mv Accelerator mass spectrometry (AMS)
Northern Benguela upwelling system (nBUS)
Iodine-129
Uranium-236
Southern hemisphere
topic Accelerator mass spectrometry (AMS)
Northern Benguela upwelling system (nBUS)
Iodine-129
Uranium-236
Southern hemisphere
description New data on the presence of 129I in seawater in the Southern Hemisphere measured by Accelerator Mass Spectrometry (AMS) is presented. The samples were collected in 2014 along the Namibian coast during a cruise organised by the National Marine Information and Research Centre (NatMIRC), the national laboratories of the Ministry of Fisheries and Marine Resources (MFMR) in Namibia, and the IAEA Environment Laboratories (IAEA NAEL) in Monaco. The Benguela upwelling system is known as one of the most important marine upwelling regions in the world. Strong winds induce an offshore transport of surface seawater which is substituted by cool subsurface water inshore. As this water is nutrient-rich, which leads to high primary productivity, the Benguela upwelling system has a very important role as a fishing production area. The 129I concentrations in samples were between (0.66 ± 0.14) × 107 and (1.45 ± 0.30) × 107 atoms/kg. The highest 129I concentrations were found in the offshore surface samples. Deep-sea and inshore samples contained lower 129I concentrations, possibly as an effect of the upwelling process. A comparison with previously published studies suggests that the presence of 129I in the northern Benguela upwelling system (nBUS), is mainly due to the impact of nuclear weapons global fallout, without any evident impact of nuclear fuel reprocessing.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/148074
https://doi.org/10.1016/j.chemosphere.2020.129065
url https://hdl.handle.net/11441/148074
https://doi.org/10.1016/j.chemosphere.2020.129065
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Chemosphere, 265.
PGC2018-094546-B-I00
https://www.sciencedirect.com/science/article/pii/S0045653520332628
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv ScienceDirect
publisher.none.fl_str_mv ScienceDirect
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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