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A summary of global I-129 in marine waters
Ansvarlig organisasjon
2013 (engelsk)Inngår i: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, E-ISSN 1872-9584, Vol. 294, s. 537-541Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Despite the many investigations concerning the occurrence of anthropogenic iodine-129 in the atmosphere, terrestrial and marine environments, there is a lack of a comprehensive collection of data on the distribution of the isotope in marine waters. The temporal and spatial variability of anthropogenic I-129 is strongly linked to the major point sources in the Irish Sea and the English Channel and the global marine spreading pathways are partly outlined from these sources. The temporal evolution is still, however, not well defined when transport and dissipation are considered in the different oceans and ocean compartments. We here summarize available published literature data on I-129 temporal and spatial distribution in the global marine water. The results show presence of numerous data sets for the North Atlantic and Arctic Oceans where strong variability in terms of water depth, time and location also occur. Scarcity of data on I-129 from the Pacific, Indian and South Atlantic Oceans demonstrates gaps in the coverage of the isotope spatial extent. These shortcomings in the spatial coverage may relate to the understanding that the anthropogenic I-129 signal will take a long time to be transported, if at all, from the North Atlantic into other oceans. Data from recent expeditions in the Southern oceans and the Geotraces ocean profiling will reveal additional information about I-129 distribution in the marine waters. (C) 2012 Elsevier B.V. All rights reserved.

sted, utgiver, år, opplag, sider
2013. Vol. 294, s. 537-541
Emneord [en]
I-129; Distribution; Global oceans
HSV kategori
Forskningsprogram
SWEDARP 2010/11, Oden Southern Ocean 2010/11
Identifikatorer
URN: urn:nbn:se:polar:diva-2997DOI: 10.1016/j.nimb.2012.08.036OAI: oai:DiVA.org:polar-2997DiVA, id: diva2:1046041
Merknad

12th International Conference on Accelerator Mass Spectrometry (AMS), GNS Sci, Wellington, NEW ZEALAND, MAR 20-25, 2011

Tilgjengelig fra: 2016-11-11 Laget: 2016-10-27 Sist oppdatert: 2017-11-29

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