Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean
Most of the anthropogenic radionuclide 129I released to the marine environment from the nuclear fuel reprocessing plants (NFRP) at Sellafield (England) and La Hague (France) is transported to the Arctic Ocean via the North Atlantic Current and the Norwegian Coastal Current. 129I concentrations in se...
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ftunivsevillair:oai:idus.us.es:11441/129853 2023-05-15T15:01:55+02:00 Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean Vivo Vilches, Carlos López Gutiérrez, José María Periáñez Rodríguez, Raúl Marcinko, Charlotte Le Moigne, Frederic McGinnity, Paul Peruchena, Juan Ignacio Villa Alfageme, María Universidad de Sevilla. Departamento de física aplicada I Universidad de Sevilla. Departamento de Física Aplicada II Universidad de Sevilla. RNM138: Física Nuclear Aplicada Ministerio de Economía y Competitividad (MINECO). España 2022-02-10T12:17:06Z application/pdf https://idus.us.es/handle//11441/129853 eng eng Elsevier Science of the Total Environment, 621 (April 2018), 376-386. FIS2015-69673-P https://www.sciencedirect.com/science/article/pii/S0048969717333260 https://idus.us.es/handle//11441/129853 info:eu-repo/semantics/openAccess AMS 129I Nordic Seas North Atlantic Ocean Deep water formation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftunivsevillair 2022-02-16T00:22:59Z Most of the anthropogenic radionuclide 129I released to the marine environment from the nuclear fuel reprocessing plants (NFRP) at Sellafield (England) and La Hague (France) is transported to the Arctic Ocean via the North Atlantic Current and the Norwegian Coastal Current. 129I concentrations in seawater provides a powerful and well-established radiotracer technique to provide information about the mechanisms which govern water mass transport in the Nordic Seas and the Arctic Ocean and is gaining importance when coupled with other tracers (e.g. CFC, 236U). In this work, 129I concentrations in surface and depth profiles from the Nordic Seas and the North Atlantic (NA) Ocean collected from four different cruises between 2011 and 2012 are presented. This work allowed us to i) update information on 129I concentrations in these areas, required for the accurate use of 129I as a tracer of water masses; and ii) investigate the formation of deep water currents in the eastern part of the Nordic Seas, by the analysis of 129I concentrations and temperature-salinity (T-S) diagrams from locations within the Greenland Sea Gyre. In the Nordic Seas, 129I concentrations in seawater are of the order of 109 at·kg− 1, one or two orders of magnitude higher than those measured at the NA Ocean, not so importantly affected by the releases from the NFRP. 129I concentrations of the order of 108 atoms·kg− 1 at the Ellet Line and the PAP suggest a direct contribution from the NFRP in the NA Ocean. An increase in the concentrations in the Nordic Seas between 2002 and 2012 has been detected, which agrees with the temporal evolution of the 129I liquid discharges from the NFRPs in years prior to this. Finally, 129I profile concentrations, 129I inventories and T-S diagrams suggest that deep water formation occurred in the easternmost area of the Nordic Seas during 2012. Ministerio de Economía y Competitividad FIS2015-69673-P Article in Journal/Newspaper Arctic Arctic Ocean Greenland Greenland Sea Nordic Seas north atlantic current North Atlantic idUS - Deposito de Investigación Universidad de Sevilla Arctic Arctic Ocean Greenland |
institution |
Open Polar |
collection |
idUS - Deposito de Investigación Universidad de Sevilla |
op_collection_id |
ftunivsevillair |
language |
English |
topic |
AMS 129I Nordic Seas North Atlantic Ocean Deep water formation |
spellingShingle |
AMS 129I Nordic Seas North Atlantic Ocean Deep water formation Vivo Vilches, Carlos López Gutiérrez, José María Periáñez Rodríguez, Raúl Marcinko, Charlotte Le Moigne, Frederic McGinnity, Paul Peruchena, Juan Ignacio Villa Alfageme, María Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean |
topic_facet |
AMS 129I Nordic Seas North Atlantic Ocean Deep water formation |
description |
Most of the anthropogenic radionuclide 129I released to the marine environment from the nuclear fuel reprocessing plants (NFRP) at Sellafield (England) and La Hague (France) is transported to the Arctic Ocean via the North Atlantic Current and the Norwegian Coastal Current. 129I concentrations in seawater provides a powerful and well-established radiotracer technique to provide information about the mechanisms which govern water mass transport in the Nordic Seas and the Arctic Ocean and is gaining importance when coupled with other tracers (e.g. CFC, 236U). In this work, 129I concentrations in surface and depth profiles from the Nordic Seas and the North Atlantic (NA) Ocean collected from four different cruises between 2011 and 2012 are presented. This work allowed us to i) update information on 129I concentrations in these areas, required for the accurate use of 129I as a tracer of water masses; and ii) investigate the formation of deep water currents in the eastern part of the Nordic Seas, by the analysis of 129I concentrations and temperature-salinity (T-S) diagrams from locations within the Greenland Sea Gyre. In the Nordic Seas, 129I concentrations in seawater are of the order of 109 at·kg− 1, one or two orders of magnitude higher than those measured at the NA Ocean, not so importantly affected by the releases from the NFRP. 129I concentrations of the order of 108 atoms·kg− 1 at the Ellet Line and the PAP suggest a direct contribution from the NFRP in the NA Ocean. An increase in the concentrations in the Nordic Seas between 2002 and 2012 has been detected, which agrees with the temporal evolution of the 129I liquid discharges from the NFRPs in years prior to this. Finally, 129I profile concentrations, 129I inventories and T-S diagrams suggest that deep water formation occurred in the easternmost area of the Nordic Seas during 2012. Ministerio de Economía y Competitividad FIS2015-69673-P |
author2 |
Universidad de Sevilla. Departamento de física aplicada I Universidad de Sevilla. Departamento de Física Aplicada II Universidad de Sevilla. RNM138: Física Nuclear Aplicada Ministerio de Economía y Competitividad (MINECO). España |
format |
Article in Journal/Newspaper |
author |
Vivo Vilches, Carlos López Gutiérrez, José María Periáñez Rodríguez, Raúl Marcinko, Charlotte Le Moigne, Frederic McGinnity, Paul Peruchena, Juan Ignacio Villa Alfageme, María |
author_facet |
Vivo Vilches, Carlos López Gutiérrez, José María Periáñez Rodríguez, Raúl Marcinko, Charlotte Le Moigne, Frederic McGinnity, Paul Peruchena, Juan Ignacio Villa Alfageme, María |
author_sort |
Vivo Vilches, Carlos |
title |
Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean |
title_short |
Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean |
title_full |
Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean |
title_fullStr |
Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean |
title_full_unstemmed |
Recent evolution of 129-I levels in the Nordic Seas and the North Atlantic Ocean |
title_sort |
recent evolution of 129-i levels in the nordic seas and the north atlantic ocean |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://idus.us.es/handle//11441/129853 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Greenland Greenland Sea Nordic Seas north atlantic current North Atlantic |
genre_facet |
Arctic Arctic Ocean Greenland Greenland Sea Nordic Seas north atlantic current North Atlantic |
op_relation |
Science of the Total Environment, 621 (April 2018), 376-386. FIS2015-69673-P https://www.sciencedirect.com/science/article/pii/S0048969717333260 https://idus.us.es/handle//11441/129853 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766333915681783808 |