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Springer Geology

ISSN:21979545

2023

10.1007/978-981-99-6575-5_20

AEEAMZ

Within the framework of numerical simulation, a study was made of the penetration of tsunami waves into a forked bay, which has the characteristic dimen-sions and configuration of Dvoynaya Bay, located in the system of Sevastopol bays. Two variants of forked bays were considered: symmetrical—consisting of two iden-tical bays; asymmetric—consisting of bays of various lengths. The SWASH nonlinear hydrodynamic model was used to model 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 propagation of tsunami waves from three potential tsunami sources caused by underwater earthquakes of magnitude 7. It was found that in the case of tsunami penetration into an asymmetric bay, level fluctuations at the tops of bays of different lengths occur in antiphase. The highest sea level rise in the bays as a result of tsunami penetration into them from the nearest focus was 2.5–2.8 m; for the focus located in the Yalta seismically active zone—0.6–0.8 m; the focus near coast of Turkey—0.4–0.6 m. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

Dvoynaya Bay, Mathematical modeling, SWASH model, Tsunami in bays, Tsunami in the Black Sea

2024-02-07 11:01:32