title: Vertical distribution of (137)Cs activity concentration in marine sediments at Amvrakikos Gulf, western of Greece.
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).
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece. Electronic address: tsabaris@hcmr.gr.
authors.forename: C
authors.initials: C
authors.lastname: Tsabaris
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece.
authors.forename: D L
authors.initials: DL
authors.lastname: Patiris
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece; National Technical University of Athens, Department of Physics, Athens, Greece.
authors.forename: E
authors.initials: E
authors.lastname: Fillis-Tsirakis
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece.
authors.forename: V
authors.initials: V
authors.lastname: Kapsimalis
authors.affiliation: Technological Education Institute of Piraeus, Automation Engineering Department, Athens, Greece.
authors.forename: M
authors.initials: M
authors.lastname: Pilakouta
authors.affiliation: Hellenic Centre for Marine Research, Institute of Oceanography, Anavyssos, Greece; National Technical University of Athens, Department of Physics, Athens, Greece.
authors.forename: F K
authors.initials: FK
authors.lastname: Pappa
authors.affiliation: National Technical University of Athens, Department of Physics, Athens, Greece.
authors.forename: R
authors.initials: R
authors.lastname: Vlastou
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis*; D019015:Geologic Sediments / Q000032:analysis*; D006115:Greece; D008962:Models, Theoretical; D011834:Radiation Monitoring; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D014875:Water Pollutants, Radioactive
keywords: (137)Cs vertical distribution; 1-D model; Marine sediments; Mobility (137)Cs