oa Environmental consequences of the creation of anti-landslide coastal protection structures in the coastal zones of sea areas (on the example of the Odessa coast)

Anti-landslide coastal protection structures, aimed at reducing marine abrasion, have a significant impact on coastal-marine geoecosystems, reducing hydrodynamic activity in water areas, and in combination with other negative factors of influence (for example, wastewater discharge, an increase in the degree of eutrophication, intensive development of algae) can lead to to environmental disaster. Three types of coastal protection structures have been built within the Odessa coastline: a system of breakwaters and groynes; buna that capture the flow of sand deposits; alternation of artificial stone capes and sandy pocket beaches. Each of these systems of structures has design flaws due to insufficient attention to the study of hydrodynamic and lithodynamic processes in the water area, which led to irreversible changes in the geoecosystem.

The construction and operation of offshore coastal protection structures should be accompanied by constant monitoring of the ecosystem, which will allow adjusting coastal protection measures and take into account the experience gained when designing structures on other parts of the coast. The problem of protecting slopes from landslides by reducing marine abrasion cannot be solved locally on small sections of the coast within individual settlements, it must be complex and systemic in order to minimize negative environmental impact on other sections of the coast.