Numerical simulation of tsunami in the system of sevastopol bays

Q3 Earth and Planetary Sciences
A. Yu. Belokon, D. I. Lazorenko, V. V. Fomin
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引用次数: 0

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.
塞瓦斯托波尔湾系统海啸的数值模拟
在数值模拟的框架内,研究了海啸波对塞瓦斯托波尔湾系统的穿透作用。采用非线性SWASH水动力模型对海啸传播过程进行了模拟。为了确定计算域液体边界的边界条件,利用黑海海啸模型,计算了7级水下地震引起的三个潜在海啸震源海啸波通过塞瓦斯托波尔附近90 m深度区域的水位波动。研究发现,由于海啸从最近的焦点渗透到塞瓦斯托波尔海湾,海湾顶部的海平面上升可达1-2米。在Pesochnaya湾和karantinaya湾收到的水平面波动幅度最大,达到2米。在塞瓦斯托波尔湾,水位上升约0.5-1米。在海啸活动的头3-3.5小时观察到最强烈的波动。这表明,塞瓦斯托波尔的沿海地区受到保护,免受来自遥远的焦点的波浪Сhersones角。数值试验表明,塞瓦斯托波尔湾入口处的防护墩对海湾内海啸引起的海平面波动没有显著影响。
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来源期刊
Fundamentalnaya i Prikladnaya Gidrofizika
Fundamentalnaya i Prikladnaya Gidrofizika Earth and Planetary Sciences-Geophysics
CiteScore
1.20
自引率
0.00%
发文量
0
期刊介绍: Emphasis of the journal includes the following areas:‎ ‎- fundamental and applied hydrophysics;‎ ‎- dynamics and hydrodynamics of marine objects;‎ ‎- physical fields of ocean, atmosphere, marine objects and their interaction;‎ ‎- methods and means for registration hydrophysical fields of ocean and marine objects;‎ ‎- application of information technology for solving problems in the field of hydrophysics, design ‎‎and operation of the offshore facilities system;‎ ‎- hydrosphere ecology;‎ ‎- hydrobionics;‎ As well as the most interesting scientific conferences’ reports, materials of science debates, book ‎‎reviews. From the scientists, engineers (and designers) of marine equipment, students, graduate ‎‎students and professors who specialize in the field of fundamental and applied hydrophysics.‎
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