1. Vertical distribution of 137Cs activity concentration in marine sediments at Amvrakikos Gulf, western of Greece.
- Author
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Tsabaris, C., Patiris, D.L., Fillis-Tsirakis, E., Kapsimalis, V., Pilakouta, M., Pappa, F.K., and Vlastou, R.
- Subjects
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MARINE sediments , *VERTICAL distribution (Aquatic biology) , *SEDIMENTATION & deposition , *RADIOISOTOPE migration , *CESIUM isotopes - Abstract
The aim of the present work is the study of 137 Cs migration in sediment column taking into account the sedimentation rate in the Amvrakikos Gulf, at the western part of Greece. Marine core sediments were collected and the measurements were performed using the high resolution gamma-ray spectrometry method. The vertical distribution of 137 Cs activity concentration, as part of anthropogenic marine radioactivity, provided averaged sedimentation rate by identifying the depths of activity concentrations due to the Chernobyl accident and the nuclear tests signals. Furthermore, 137 Cs measurements were reproduced using the proposed one-dimensional diffusion–advection model which provides mainly as an output, the sedimentation rate and the average diffusivity of 137 Cs in the sediment column. The proposed model estimates the temporal variation of 137 Cs activity concentration from 1987 (one year after the Chernobyl accident) till today (2014). [ABSTRACT FROM AUTHOR]
- Published
- 2015
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