The distribution and inventory of fallout plutonium in sediments of the Ligurian Sea near La Spezia,Italy |
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Authors: | CD Jennings R Delfanti C Papucci |
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Institution: | Centro Ricerche Energia Ambiente - S. Teresa, ENEA, CP 316, 19100 La Spezia, Italy |
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Abstract: | Pu concentrations in surface sediments of the Ligurian Sea are about ten times higher than in adjacent river sediments and are highly correlated with sediment porosities. The integrated inventory of 239,240Pu in a sediment core is calculated to be 3·5 mCi km?2, nearly twice the average input from fallout at these latitudes, apparently because Pu is removed from seawater by particle scavenging.The sedimentation rate is calculated from the depth of the 239,240Pu maximum to be 0·52 ± 0·06 cmy?1. |
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