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Article

Evaluation of Coastal Sediment Dynamics Utilizing Natural Radionuclides and Validated In-Situ Radioanalytical Methods at Legrena Beach, Attica Region, Greece

by
Christos Tsabaris
1,*,
Alicia Tejera
2,
Ronald L. Koomans
3,
Damien Pham van Bang
4,
Abdelkader Hammouti
4,
Dimitra Malliouri
1,
Vasilios Kapsimalis
1,
Pablo Martel
2,
Ana C. Arriola-Velásquez
2,
Stylianos Alexakis
1,
Effrosyni G. Androulakaki
1,
Georgios Eleftheriou
1,
Kennedy Kilel
5,
Christos Maramathas
6,
Dionisis L. Patiris
1 and
Hannah Affum
7
1
Hellenic Centre for Marine Research, Institute of Oceanography, 46.7 Km Athens-Sounio Ave., 19013 Anavyssos, Greece
2
Physics Department, Institute of Environmental Studies and Natural Resources, Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
3
Medusa Explorations BV|Medusa Radiometrics BV, Skagerrak 26, 9723 JR Groningen, The Netherlands
4
Department of Construction, Ecole de Technologie Supérieure Université du Québec, ETS, 1100 rue Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada
5
Department of Physics, Kenyatta University, Nairobi 00100, Kenya
6
teleDOS Laboratories S.M. P.C. - teleDOS Nuclear Tech, 20131 Corinth, Greece
7
Radiochemistry and Radiation Technology Section, Division of Physical and Chemical Sciences, Department of Nuclear Science and Applications, International Atomic Energy Agency (IAEA), A-1400 Vienna, Austria
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2025, 13(7), 1229; https://doi.org/10.3390/jmse13071229
Submission received: 19 May 2025 / Revised: 16 June 2025 / Accepted: 23 June 2025 / Published: 26 June 2025
(This article belongs to the Special Issue Research Progress on Ocean Observations Technology and Information Systems)
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Abstract

This study was realized in the frame of an IAEA Coordinated Research Project for the evaluation of sediment dynamics, applying in-situ radiometric methods accompanied with a theoretical model. The in-situ methods were validated using lab-based high-resolution gamma-ray spectrometry. Sediment dynamics assessments were performed based on the measured and mapped activity concentrations of specific 238U progenies (214Bi or 214Pb), 232Th progenies (208Tl and 228Ac), and 40K along the shoreline of the beach. The maps of the activity concentrations of natural radionuclides were produced rapidly using software tools (R language v4.5). The sediment dynamics of the studied area were also investigated through numerical simulations, applying an open source model considering land–sea interactions and meteorological conditions and the corresponding sediment processes. The assessments, which were conducted utilizing the detailed data from the natural radioactivity maps, were validated by the simulation results, since both were found to be in agreement. Generally, it was confirmed that the distribution of radionuclides reflects the selective transport processes of sediments, which are related to the corresponding processes that occur in the study area. Legrena Beach in Attica, Greece, served as a pilot area for the comparative analysis of methods and demonstration of their relevance and applicability for studying coastal processes.
Keywords: beach sand; in situ instrumentation; natural radionuclides; sediment dynamics; erosion-accretion; radioactivity mapping; rapid maps; protected marine areas beach sand; in situ instrumentation; natural radionuclides; sediment dynamics; erosion-accretion; radioactivity mapping; rapid maps; protected marine areas

Share and Cite

MDPI and ACS Style

Tsabaris, C.; Tejera, A.; Koomans, R.L.; Pham van Bang, D.; Hammouti, A.; Malliouri, D.; Kapsimalis, V.; Martel, P.; Arriola-Velásquez, A.C.; Alexakis, S.; et al. Evaluation of Coastal Sediment Dynamics Utilizing Natural Radionuclides and Validated In-Situ Radioanalytical Methods at Legrena Beach, Attica Region, Greece. J. Mar. Sci. Eng. 2025, 13, 1229. https://doi.org/10.3390/jmse13071229

AMA Style

Tsabaris C, Tejera A, Koomans RL, Pham van Bang D, Hammouti A, Malliouri D, Kapsimalis V, Martel P, Arriola-Velásquez AC, Alexakis S, et al. Evaluation of Coastal Sediment Dynamics Utilizing Natural Radionuclides and Validated In-Situ Radioanalytical Methods at Legrena Beach, Attica Region, Greece. Journal of Marine Science and Engineering. 2025; 13(7):1229. https://doi.org/10.3390/jmse13071229

Chicago/Turabian Style

Tsabaris, Christos, Alicia Tejera, Ronald L. Koomans, Damien Pham van Bang, Abdelkader Hammouti, Dimitra Malliouri, Vasilios Kapsimalis, Pablo Martel, Ana C. Arriola-Velásquez, Stylianos Alexakis, and et al. 2025. "Evaluation of Coastal Sediment Dynamics Utilizing Natural Radionuclides and Validated In-Situ Radioanalytical Methods at Legrena Beach, Attica Region, Greece" Journal of Marine Science and Engineering 13, no. 7: 1229. https://doi.org/10.3390/jmse13071229

APA Style

Tsabaris, C., Tejera, A., Koomans, R. L., Pham van Bang, D., Hammouti, A., Malliouri, D., Kapsimalis, V., Martel, P., Arriola-Velásquez, A. C., Alexakis, S., Androulakaki, E. G., Eleftheriou, G., Kilel, K., Maramathas, C., Patiris, D. L., & Affum, H. (2025). Evaluation of Coastal Sediment Dynamics Utilizing Natural Radionuclides and Validated In-Situ Radioanalytical Methods at Legrena Beach, Attica Region, Greece. Journal of Marine Science and Engineering, 13(7), 1229. https://doi.org/10.3390/jmse13071229

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