Effects of harbour shape on the induced sedimentation

Tsunamis in shallow water zones lead to sea water level rise and fall, strong currents, forces (drag, impact, uplift, etc.), morphological changes (erosion, deposition), dynamic water pressure, as well as resonant oscillations. As a result, ground materials under the tsunami motion move and scour/erosion/deposition patterns can be observed in the region. Ports and harbours as enclosed basins are the main examples of coastal structures that usually encounter natural hazards with small or huge damaging scales. Morphological changes are one of the important phenomena in the basins under short and long wave attack. Tsunamis as long waves lead to sedimentation in the basins, and therefore, in this study, the relation to the current pattern is noticed to determine sedimentation modes. Accordingly, we present a methodology based on the computation of the instantaneous Rouse number to investigate the tsunami motion and to calculate the respective sedimentation. This study aims to investigate the effects of the incident wave period on Antalya Belek region is selected as a case study sedimentation, NAMI DANCE, which solves non-linear shallow water equations. The results showed that the corner points on the bending part of the basin are always the critical points where water surface elevation and current velocity amplify in the exterior and interior corners, respectively.

Kian R.1 , Velioglu D.1 , Yalciner A.C.1 , Pelinovsky E.3, 4 , Kurkin A. 4, 5 , Zaytsev A.4, 2 , Yalciner B.1 , Pamuk A.1
Mediterranean Coastal Foundation
  • 1 Middle East Technical University, Çankaya Ankara, 06800, Turkey
  • 2 Spec. Res. Bur. for Automat. of Marine Researches Far Eastern Branch of Russian Academy of Sciences, Yuzhno-Sakhalinsk, 693023, Russian Federation
  • 3 Institute of Applied Physics Russian Academy of Sciences, Nizhny Novgoro, 603950, Russian Federation
  • 4 Nizhny Novgorod State Technical University N.a. R.E. Alekseev, Nizhny Novgorod, 603950, Russian Federation
  • 5 Institute of Space Technologies, Peoples' Friendship University of Russia (RUDN University), Moscow, 117198, Russian Federation
Ключевые слова
Equations of motion; Morphology; Ports and harbors; Seawater; Tsunamis; Water levels; Coastal structures; Current patterns; Current velocity; Dynamic water pressures; Morphological changes; Non-linear shallow water equations; Resonant oscillation; Water surface elevations; Sedimentation
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