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Regularities in the transformation of coastal and accumulative forms of sea bottom relief, with application for water management

Kapochkin B., Kucherenko N., Kapochkina M.

Meteorology Hydrology and Water Management. Research and Operational Applications

2014

Vol. 2, Iss. 2

43--48

Investigate the processes of formation of accumulative forms of sea bottom relief and coast. The coincidence of the linear parts of the accumulative sea bottom relief with the direction of tectonic faults. Provides examples exploring the coast of the Atlantic Ocean, the Baltic, Black and Azov Seas. Consider the problem of continuing in the sea geological structures on dry land. On the example of the Azov Sea it was shown that the horst on land in the coastal zone is shown a linear zone of eroded beaches. Sustainable shore erosion are confined to the gorst. Graben on land continues at sea accumulative forms of type foreland. The accumulation zone of sediment are confined to grabens. Shown that different direction storms form accumulative relief in accordance with clear rules. Random exogenous factors are controlled regularities endogenous processes. Endogenous formation of sea bottom relief happens resulting impact endogenous processes on the speed currents. In those locations where currents slows down the sand falls to the bottom. Decrease in speed currents occurs lengthwise tectonic faults. Faults is the migration path lithospheric fluids. To elucidate the reasons for the formation of specific conditions sediment load was carried out mathematical modeling of currents over a linear zone submarine groundwater discharge. Hydrodynamic software decides system of Navier-Stokes equations. Made mathematical modeling the interaction currents and the water flowing from a tectonic fault.

Above - water accumulative forms within the shore zone of the reservoir showing significant seasonal water level fluctuations based on the Pakoski reservoir'

Grobelska H.

Landform Analysis

2008

Vol. 6

28--40

The Pakoski reservoir .was created in 1975 as a result of damming the lakes located within the Western Valley of the Noteć River. This reservoir operates in rearly cycles with water level fluctuations of up to 3.6 m. The researches carried off by the author in the years 1998-2003 indicate that the thirty-year exploitation period has not ended the intense reshaping phase of the shore zone of the reservoir. Both intensive shore abrasion and various accumulative forms support the above statement. These forms include the small ones of distinctively initial character, such as accumulative spurs or berms, as well as the complex ones whose shaping process has almost finished and the area of which exceeds a few hundred square metres. Due to constant lowering of the water level, accumulative forms occur within the entire width of the shore-platform which is being dried. In most cases these are whole groups of smaller forms related to one another. A beach can constitute a good example, as it predominantly combines a few, most often 5 to 6, adjoining beach ridges separated with small lagoons.