Numerical simulation of tsunami in the system of sevastopol bays
https://doi.org/10.59887/2073-6673.2023.16(3)-4
Abstract
Within the framework of numerical simulation, a study was made of the penetration of tsunami waves into the system of Sevastopol bays. The non-linear SWASH hydrodynamic model was used to simulate the tsunami propagation. To determine the boundary conditions on the liquid boundary of the computational domain, using the Black Sea tsunami model, the level fluctuations near Sevastopol in the region of depths of 90 m were calculated during the passage of tsunami waves from three potential tsunami foci caused by underwater earthquakes of magnitude 7. It was found that in because of tsunami penetration into the bays of Sevastopol from the nearest focus, the rise in sea level in the tops of the bays could reach 1–2 m. The maximum amplitudes of level fluctuations were received in Pesochnaya and Karantinnaya bays, where they reached 2 m. In the Sevastopol Bay, the level rises were about 0.5–1 m. The most intense fluctuations were observed in the first 3–3.5 hours of the tsunami action. It is shown that the coastal zone of Sevastopol is protected from waves coming from distant foci by Cape Сhersones. Numerical experiments have shown that the protective piers at the entrance to the Sevastopol Bay do not have a significant effect on the sea level fluctuations caused by the tsunami inside the bay.
Keywords
numerical simulation,
tsunami,
SWASH,
Sevastopol Bay,
computational grids,
high-performance calculations
Supporting agencies: The investigation was carried out within the framework of the state assignment on theme No FNNN-2021-0005. Mathematical modeling was performed on the MHI computing cluster (www.hpc-mhi.org)
About the Authors
A. Yu. Belokon
Marine Hydrophysical Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
299011
Kapitanskaya Str., 2
Sevastopol
D. I. Lazorenko
Marine Hydrophysical Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
299011
Kapitanskaya Str., 2
Sevastopol
V. V. Fomin
Marine Hydrophysical Institute, Russian Academy of Sciences
Russian Federation
Russian Federation
299011
Kapitanskaya Str., 2
Sevastopol
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Review
For citations:
Belokon A.Yu., Lazorenko D.I., Fomin V.V. Numerical simulation of tsunami in the system of sevastopol bays. Fundamental and Applied Hydrophysics. 2023;16(3):52-61. (In Russ.) https://doi.org/10.59887/2073-6673.2023.16(3)-4
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