Resuspension of Bottom Sediments in a Shallow Lagoon by Currents and Waves Based on the Numerical Modeling Data (Using the Example of Sivash Bay, the Sea of Azov)

V. V. Fomin, E. V. Ivancha, A. A. Polozok

Marine Hydrophysical Institute of RAS, Sevastopol, Russian Federation



Purpose. The work is purposed at studying the intensity of resuspension of silty bottom sediments in Eastern Sivash Bay (the Sea of Azov) during an extreme storm, as well as at assessing the contribution of currents and wind waves to the resuspension processes.

Methods and Results. The current fields are calculated using a three-dimensional σ-coordinate water circulation model of the POM type supplemented with a block of silty sediments resuspension. The SWAN spectral model is applied to calculate wind waves. In both models a rectangular computational grid with the horizontal resolution 300 m is involved. The ERA-Interim atmospheric reanalysis data corresponding to the extreme storm situation in November 10–13, 2007 are used as a forcing. The performed calculations constituted a base for analyzing the structure of the fields of waves, currents, bottom shear stresses and suspended matter concentration in Eastern Sivash for different phases of the storm. A technique for assessing the resuspension model sensitivity to the variations in the input parameter values is proposed.

Conclusions. The applied resuspension model is most sensitive to the variations in the parameter values that condition intensity of the silt particles vertical flow from the basin bottom. During the period of the storm maximum development, conditions for forming resuspension zones arise on 80 % of the total area of Eastern Sivash Bay. If, while modeling, the contribution of the waves is not taken into account, the total area of resuspension is reduced by four times. This fact testifies to a decisive contribution of the bottom wave stresses in formation of the resuspension zones in bottom sediments in the bay.


resuspension, bottom sediments, silt fraction, currents, wind waves, numerical modeling, Sivash


The study was carried out within the framework of theme of the FSBSI FRC MHI FNNN-2021-0005. The model calculations were performed at the MHI computing cluster.

Original russian text

Original Russian Text © V. V. Fomin, E. V. Ivancha, A. A. Polozok, 2024, published in MORSKOY GIDROFIZICHESKIY ZHURNAL, Vol. 40, Iss. 3, pp. 469–488 (2024)

For citation

Fomin, V.V., Ivancha, E.V. and Polozok, A.A., 2024. Resuspension of Bottom Sediments in a Shallow Lagoon by Currents and Waves Based on the Numerical Modeling Data (Using the Example of Sivash Bay, the Sea of Azov). Physical Oceanography, 31(3), pp. 427-445.


  1. Sovga, E.E., Eremina, E.S. and D'yakov, N.N., 2018. System of the Ecological Monitoring in the Sivash Bay in the Modern Conditions. Ecological Safety of Coastal and Shelf Zones of Sea, (2), pp. 22-38. (in Russian).
  2. Sovga, E.Е., Eryemina, E.S. and Khmara, T.V., 2018. Water Balance in the Sivash Bay as a Result of Variability of the Natural-Climatic and Anthropogenic Factors. Physical Oceanography, 25(1), pp. 67-76.
  3. Fomin, V.V. and Polozok, A.A., 2022. Features of River Plume Formation in a Shallow Lagoon (the Case of the Sivash Bay, the Sea of Azov). Ecological Safety of the Coastal and Shelf Zones of the Sea, (3), pp. 28-42.
  4. Polozok, A.A., Fomin, V.V. and Ivancha, E.V., 2023. Numerical Modeling of Wind Currents in the Sivash Gulf (Sea of Azov). In: T. Chaplina, ed., 2023. Processes in GeoMedia. Singapore: Springer, vol. VII, pp. 9-20.
  5. Fomina, I.N., Fomin, V.V. and Polozok, A.A., 2022. Wind Waves in Sivash Bay According to the Results of Numerical Modeling. In: SSC RAS, 2022. Ecology. Economy. Informatics. System Analysis and Mathematical Modeling of Ecological and Economic Systems. Rostov-on-Don: SSC RAS, 1(7), pp. 97-102. (in Russian).
  6. Alekseev, D.V., Ivanov, V.A., Ivancha, E.V., Fomin, V.V. and Cherkesov, L.V., 2007. Investigation of the Fields of Concentration of the Suspension on the Northwest Shelf of the Black Sea in the Case of Roiling of the Bottom Sediments by a Moving Cyclone. Physical Oceanography, 17(1), pp. 1-16.
  7. Martyanov, S.D. and Ryabchenko, V.A., 2013. Simulation of the Resuspension and Transport of Bottom Sediments in the Neva Bay Using a 3D Circulation Model. Fundamental and Applied Hydrophysics, 6(4), pp. 32-43 (in Russian).
  8. Sovga, E.E., Eremina, E.S. and Latushkin, A.A., 2020. Research Expeditions Performed by Marine Hydrophysical Institute in the Sivash Bay Waters in Spring and Autumn, 2018. Physical Oceanography, 27(2), pp. 161-170.
  9. Lomakin, P.D., 2021. Features of the Oceanological Values Fields in the Sivash Bay (The Sea of Azov). Physical Oceanography, 28(6), pp. 647-659.
  10. Booij, N., Ris, R.C. and Holthuijsen, L.H., 1999. A Third-Generation Wave Model for Coastal Regions: 1. Model Description and Validation. Journal of Geophysical Research: Oceans, 104(C4), pp. 7649-7666.
  11. Ivanov, V.A. and Fomin, V.V., 2010. Mathematical Modeling of Dynamical Processes in the Sea-Land Area. Kyiv: Akademperiodyka, 286 p.
  12. Blumberg, A.F. and Mellor, G.L., 1987. A Description of a Three-Dimensional Coastal Ocean Circulation Model. Coastal and Estuarine Science, 4, pp. 1-16.
  13. Smagorinsky, J., 1963. General Circulation Experiments with the Primitive Equations: I. The Basic Experiment. Monthly Weather Review, 91(3), pp. 99-164.;2
  14. Burchard, H., Bolding, K. and Villarreal, M., 2004. Three-Dimensional Modelling of Estuarine Turbidity Maxima in a Tidal Estuary. Ocean Dynamics, 54(2), pp. 250-265.
  15. Yang, Z. and Hamrick, J.M., 2003. Variational Inverse Parameter Estimation in a Cohesive Sediment Transport Model: An Adjoint Approach. Journal of Geophysical Research: Oceans, 108(C2), 3055.
  16. Van Rijn, L.C., 2007. Unified View of Sediment Transport by Currents and Waves. II: Suspended Transport. Journal of Hydraulic Engineering, 133(6), pp. 668-689.
  17. Kuhrts, C., Fennel, W. and Seifert, T., 2004. Model Studies of Transport of Sedimentary Material in the Western Baltic. Journal of Marine Systems, 52(1-4), pp. 167-190.
  18. Kremenchtskiy, D.A., Kubryakov, A.A., Zav’yalov, P.O., Konovalov, B.V., Stanichniy, S.V. and Aleskerova, A.A., 2014. Determination of the Suspended Matter Concentration in the Black Sea Using to the Satellite MODIS Data. In: MHI, 2014. Ecological Safety of Coastal and Shelf Zones and Comprehensive Use of Shelf Resources. Sevastopol: ECOSI-Gidrofizika. Iss. 29, pp. 5-9 (in Russian).

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