Professional paper

Morphodynamics of the gravel beach Ploče in intense sirocco conditions

Goran Lončar ; Sveučilište u Zagrebu, Građevinski fakultet, Zagreb, Hrvatska
Dalibor Carević ; Sveučilište u Zagrebu, Građevinski fakultet, Zagreb, Hrvatska
Suzana Ilić ; University of Lancaster, United Kingdom
Nino Krvavica ; Sveučilište u Rijeci, Građevinski fakultet, Rijeka, Hrvatska
Filip Kalinić ; Tehničko veleučilište u Zagrebu

Abstract

An analysis of the morphodynamics of the artificially filled gravel beach Ploče in Rijeka was conducted.
The numerical simulations of wave deformations and gravel sediment transport were initially performed for
hypothetical wave events with event directions SSE (157.50), S (1800), SSW (202.50) and SW (225°), a variation of
significant wave heights (HS = 1.0 m, 1.5 m and 2.0 m) and corresponding peak wave periods. The parameterization
of the numerical model is based on the results of the empirical pattern of the along-the-coast component of gravel
sediment transport and the results of a laboratory investigation of the transverse component of gravel sediment
transport. This was followed by a numerical simulation of the morphodynamics for one intense sirocco event (March
6, 2020), using the actual wave conditions recorded at the wave station located in immediate proximity of the
beach Ploče and the sea level dynamics recorded at the mareographic station Bakar. The verification of the model
simulation results for the actual environmental conditions was performed by comparing the positions and quantities
of eroded / accumulated material along the shore with the terrain image processing in the form of point clouds. The
total volumes of the eroded and accumulated gravel sediment based on image processing are in agreement with the
model values

Keywords

Gravel beach; morphodynamics; numerical model

Hrčak ID:

249870

URI

https://hrcak.srce.hr/249870

Publication date:

24.9.2020.

Article data in other languages: croatian german

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