AI Article Synopsis
- The study focuses on the migration of (137)Cs in sediment layers in the Amvrakikos Gulf, Greece, considering sedimentation rates.
- Marine core sediments were analyzed using high-resolution gamma-ray spectrometry to understand the vertical distribution of (137)Cs, linked to historical events like the Chernobyl accident.
- A one-dimensional diffusion-advection model was used to estimate sedimentation rates and the movement of (137)Cs over time, covering the period from 1987 to 2014.
Article 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).
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| http://dx.doi.org/10.1016/j.jenvrad.2015.02.009 | DOI Listing |
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