Hybrid Modeling of Changes in the Gelendzhik Bay Coastline due to the Construction of a Marina

The article examines the impact of the construction of a marina on the lithodynamic processes in Gelendzhik Bay, a closed water area with a complex sediment balance. Historically, the bay was a closed system, but active hydraulic engineering (artificial beaches, port facilities) disrupted the natural morphodynamics. An integrated approach combining numerical (SWAN, Wave Watch III models) and physical modeling on a scale of 1:100 has been applied to assess the effects of anthropogenic impact.Physical modeling has shown that the port facilities form local erosion zones./sediment accumulation. The results of experimental studies qualitatively confirm the conclusions of numerical modeling. Despite the local changes, the port does not significantly affect the overall sediment transport. The study highlights the need for an integrated approach to modeling lithodynamic processes.