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14th MEDCOAST Congress on Coastal and Marine Sciences, Engineering, Management and Conservation, MEDCOAST 2019

ISSN:ISBN: 978-605697471-7

2019

The importance of studying local features of changes in sediment granulometric composition and the coastal zone relief dynamics on the coastal areas of the Western Crimea is increasing due to the active exploitation of the region recreational potential. A series of numerical experiments was carried out to study the mechanism of storm redistribution of different sediment fractions when the wave parameters are changed. The lithodynamic processes taking place at the Western Crimea coastal zone in the region of the Lake Saki bay-bar were investigated using the XBeach mathematical model. The results of wave simulation near Western Crimea using the SWAN spectral wave model and wind forcing data from ERA-Interim reanalysis are presented. The insitu data on the bottom relief and the sediments grain size were used as the model input parameters. The granulometric composition was present as a mixture of three components distributed along the profile of the underwater coastal slope (UCS); at that the ratios of volume concentrations were different. It is shown that main changes in the sediment fractions redistribution are observed during the first 6 hours. In all numerical experiments an active redistribution of coarser fractions in the upper part of the UCS and unidirectional transport of small particles towards the sea are observed. © 14th MEDCOAST Congress on Coastal and Marine Sciences, Engineering, Management and Conservation, MEDCOAST 2019. All rights reserved.

GRANULOMETRIC COMPOSITIONS, NUMERICAL EXPERIMENTS, SEDIMENT FRACTION, SPECTRAL WAVE MODELS, THREE COMPONENT, UNIDIRECTIONAL TRANSPORT, VOLUME CONCENTRATION, WAVE SIMULATIONS

2019-12-12 15:49:00