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Seiche Oscillations in the System of Sevastopol Bays
Water Resources ( IF 1 ) Pub Date : 2021-09-15 , DOI: 10.1134/s0097807821050122
Yu. V. Manilyuk 1 , D. I. Lazorenko 1 , V. V. Fomin 1
Affiliation  

Abstract

A linear approximation and a finite-element hydrodynamic model ADCIRC were used to study seiche oscillations in the system of Sevastopol bays caused by wave perturbations on the liquid boundary of the model domain. The calculations were carried out for perturbations with periods from 1 to 52 min with impact duration from 4 to 24 h. Resonance periods were found for the bays in the system. The effect of perturbations with a duration of >15 h with periods 1–15 min lead to the generation of intense high-frequency modes with periods 2.0–4.5 min, which become dominant over low-frequency modes (periods >10 min) in all Sevastopol bays, thus creating in them the conditions for harbor seiche formation. The bays interact with one another via energy exchange through their entries, resulting in the penetration of oscillations with periods of characteristics modes of each bay into adjacent bays. The Helmholtz mode of the Bay of Sevastopol (with a period of 48 min) manifests itself in all bays of the system.



中文翻译:

塞瓦斯托波尔海湾系统中的塞切振荡

摘要

使用线性近似和有限元流体动力学模型 ADCIRC 来研究由模型域液体边界上的波浪扰动引起的塞瓦斯托波尔海湾系统中的地震振荡。计算时间为 1 至 52 分钟,冲击持续时间为 4 至 24 小时。为系统中的隔间找到了共振周期。持续时间 >15 小时,周期为 1-15 分钟的扰动的影响导致产生周期为 2.0-4.5 分钟的强烈高频模式,这在所有低频模式(周期 >10 分钟)中占主导地位塞瓦斯托波尔海湾,从而为海港形成创造条件。海湾通过它们的入口通过能量交换相互交互,导致具有每个隔间特征模式周期的振荡渗透到相邻隔间中。塞瓦斯托波尔湾的亥姆霍兹模式(周期为 48 分钟)在系统的所有海湾中都表现出来。

更新日期:2021-09-15
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