Distribution of plutonium and its oxidation states in Framvaren and Hellvik fjords, Norway

Sanchez, Arthur L.; Gastaud, Janine; Holm, Elis; Roos, Per. 1994 Distribution of plutonium and its oxidation states in Framvaren and Hellvik fjords, Norway. Journal of Environmental Radioactivity, 22 (3). 205-217.

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Waters from the Skagerrak Sea entering the system of fjords inside Farsund in the southern tip of Norway (including Lyngsdal, Hellvik and Framvaren fjords) contain plutonium derived from European nuclear fuel reprocessing facilities in the United Kingdom and France, as shown by the 238Pu/239,240Pu activity ratios measured for water samples from Hellvik and Framvaren fjords. The shallow sills interconnecting this series of fjords, however, severely restrict water exchange. Thus, at the northernmost Framvaren fjord (connected to Hellvik fjord by a 500-m channel of 2 m depth), the 238Pu/239,240Pu signature for Pu derived from fuel reprocessing is found only in the surface layer (upper 20 m) while global fallout Pu ratios are observed in the permanently anoxic zone of this fjord. Plutonium oxidation state measurements in waters collected from Hellvikkand Framvaren fjords show that water exchange occurs between these two basins by a process of interleaving, with subsequent reduction of oxidized Pu species as these reach the anoxic zone. Plutonium serves as a useful tracer for water exchange between these fjords and the Skagerrak Sea.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Other
UKCEH and CEH Sections/Science Areas: _ Pre-2000 sections
ISSN: 0265-931X
Additional Keywords: radioecology
NORA Subject Terms: Ecology and Environment
Date made live: 05 Mar 2013 14:19 +0 (UTC)

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