ESTIMATION AND FORECASTING OF THE FLOODING OF COASTAL AREAS AS A RESULT COMMISSIONING OF THE COMPLEX OF PROTECTION CONSTRUCTIONS (CPC) IN THE NEVA BAY
Abstract and keywords
Abstract (English):
Closing the water and navigation gates, preventing flooding on the coast of the Neva Bay in St. Petersburg, causes an additional increase in the level rise and flooding of coastal areas of the Gulf of Finland to the west from the complex of protection constructions (CPC). The magnitude of this flooding and its distribution along the coast have not been investigated. There is only a model for evaluating the likely level rise caused by CPC closing. It should be noted also that sea level rise event to the west of the dam leads to a shift of the area undergoing active wave influence in the direction of the coast. The situation is complicated by the fact that ground in this area not previously exposed to hydrodynamic forces and therefore can be easily washed out. Also due to the fact that flooding is almost always accompanied by stormy waving in flooded areas we can expect a significant morphological transformation: coastal erosion, as well as change the contour of the shore. It is planned the implementation of operational three-dimensional hydrodynamic model of the coastal areas with a horizontal spatial resolution of about 100 m and variable eastern boundary, simulating the closure of the water and navigation gates, as well as built-in procedure that simulates the drying zone and flooding. As a result will be new knowledge on the effects of hydraulic constructions to the level variations during the flooding, the quantitative assessment of flooding potential areas and drying shores, GIS maps to visualize the results, developed a method for rapid prediction of flooding coasts.

Keywords:
uroven' morya
References

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