Surveillance of the seashore using the KATERINA II geo-referenced detection system

Tsabaris, Christos; Patiris, Dionisis; Maramathas, Christos; Androulakaki, Efrosyni; Eleftheriou, Georgios; Pappa, Filothei; Alexakis, Stylianos

doi:10.12681/hnpsanp.2473

Cited by 3 publications

(2 citation statements)

References 4 publications

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Section: Stratoni Portmentioning

confidence: 99%

“…The energy photopeak around 600 keV is the result of the contribution of three radionuclides: 214 Bi at 609 keV, 208 Tl at 583 keV, and 137 Cs at 661 keV. The photopeak efficiency is calculated using the EGS4nrc simulation code [28] without taking into consideration the human body (where the detection system was mounted during the experimental work) in the simulation runs. As concerns the laboratory analysis and the results of activity concentrations, the samples were collected in the beach sand and the beach-sea interface (the berm area as given in Figure 1).…”

Section: Stratoni Portmentioning

confidence: 99%

See 1 more Smart Citation

In Situ Radioactivity Maps and Trace Metal Concentrations in Beach Sands of a Mining Coastal Area at North Aegean, Greece

Tsabaris,

Patiris,

Adams

et al. 2023

JMSE

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In recent years, the environmental effects of both active and legacy mining activity have motivated many research groups worldwide through the use of a variety of methods that have been conducted among diverse environments. In this study, we measured radionuclide concentrations at two coastline locations of the Northern Aegean Sea: Stratoni and Ierissos. We deployed KATERINA II, an in situ gamma ray spectrometer. Our results indicate that the activity concentration for 238U progenies (214Bi), 232Th progenies (208Tl and 228Ac) and 40K vary by up to (33 ± 4) Bq kg−1, (19 ± 3) Bq kg−1, and (420 ± 30) Bq kg−1, respectively. The activity concentration of the 137Cs in Stratoni and Ierissos beach sands were (8.1 ± 2.2) and (3.9 ± 1.2) Bq kg−1, respectively. Lab-based measurements were also collected prior to the in situ data collection for the determination of radionuclide and metal concentrations. The lab-based data were found to be (800 ± 40) μg g−1 and (12 ± 1) μg g−1, for As, (1200 ± 60) μg g−1 and (33.3 ± 0.3) μg g−1 for Pb, (100 ± 6) μg g−1 and (6.0± 0.3) μg g−1 for Cu and (2000 ± 60) μg g−1 and (8.0 ± 0.4) μg g−1 for Zn, respectively. We used the R language and environment for statistical computing to produce radiological maps of the subject beach sands. We used the Enrichment Factor (EF) to estimate assessment indices for the target area and compared them to internationally recommended values. The in situ maps will be discussed since the beach area of the load-out pier area of Stratoni was undergoing the first phase of active remediation. We conclude that the temporal aspect of this dataset can be of significant reference value against future comparative studies after the remediation of the Stratoni beach with potentially denser spatial and temporal data coverage.

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Section: Stratoni Portmentioning

confidence: 99%

Section: Stratoni Portmentioning

confidence: 99%

In Situ Radioactivity Maps and Trace Metal Concentrations in Beach Sands of a Mining Coastal Area at North Aegean, Greece

Tsabaris,

Patiris,

Adams

et al. 2023

JMSE

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Natural radionuclides as tracers of coastal sediment dynamics in El Confital Bay (Spain): Spatial distribution and relationships with sediment characteristics

Arriola-Velásquez,

Tejera,

Alonso

et al. 2024

CATENA

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Radioactivity mapping of beach sand by mobile in situ gamma-ray spectrometry

Patiris,

Tsabaris,

Maramathas

et al. 2024

HNPS Adv Nucl Phys

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A new method for prompt radioactivity mapping of beach sand is under development. It is based on mobile in situ gamma-ray spectrometry exploiting low- and medium-resolution portable scintillator systems. Two case study applications are presented which took place during IAEA’s RER1020 and CRP F22074 projects, aiming to determine the main methodological features, capabilities, and limitations of the new method. In general, spectra of very short acquisition time (20s) are obtained by a mobile unit (man or vehicle) along transects on the beach sand. The statistic of each spectrum is extremely low for individual analysis however, the spatial resolution of each measurement is preserved high (a few meters). The distribution of the total counting rate is used to classify the spectra, according to quartiles, into four classes (high, low, medium-high, and medium-low). For each class, the spectra are combined into one of a total acquisition time high enough for spectrometric analyses. Laboratory HPGe measurements and simulation studies were used to calculate the efficiency of selected photo-peak energies. The first maps obtained by the mobile method are in very good agreement with those obtained by grid sampling and laboratory analyses. Critical aspects under further investigation regard the varied physical parameters of the beach sand (density, water content, porosity) and the complicated detection geometry both of them strongly related to the detection efficiency.

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Surveillance of the seashore using the KATERINA II geo-referenced detection system

Cited by 3 publications

References 4 publications

In Situ Radioactivity Maps and Trace Metal Concentrations in Beach Sands of a Mining Coastal Area at North Aegean, Greece

In Situ Radioactivity Maps and Trace Metal Concentrations in Beach Sands of a Mining Coastal Area at North Aegean, Greece

Natural radionuclides as tracers of coastal sediment dynamics in El Confital Bay (Spain): Spatial distribution and relationships with sediment characteristics

Radioactivity mapping of beach sand by mobile in situ gamma-ray spectrometry

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