Wave Climate of the Coastal Zone of the Crimean Peninsula

Divinsky, B. V.; Kosyan, R. D.

doi:10.22449/1573-160x-2018-2-93-101

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…In [8,9], the results of numerical modeling of storm waves in the Black Sea using various types of atmospheric reanalysis were presented. In [10], the wind-wave climate variability over the past 37 years was studied.…”

Section: Introductionmentioning

confidence: 99%

Updated System for the Sea Wave Operational Forecast of the Black Sea Marine Forecasting Center

Ratner¹,

Fomin²,

Kholod³

et al. 2021

PhO

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Purpose. The work is aimed at updating the sea wave forecasting system developed in the Black Sea Marine Forecasting Center by including the block of wind wave forecast in the Sevastopol region and by improving the wave forecast accuracy using the proposed procedure for the SWAN model tuning. Methods and Results. In the updated forecasting system, the possibility of performing the joint operational sea wave forecasts for the Black Sea and the Sevastopol region (with the 5 and 1 km spatial resolutions, respectively) became possible due to the nested grid method applied. To improve accuracy of the wave forecasts, the procedure for the SWAN model tuning was proposed. It is based on changing the parameterization of the surface friction coefficient Cd(V), where V is the surface wind speed. This permits to reduce the deviations of the forecasted wave heights from those obtained from the satellite altimetry measurements. Efficiency of the proposed procedure was assessed through comparison of the forecasting results with the remote sensing data. It is shown that in the forecasts supplied with an optimal choice of functional dependence Cd(V), the scattering index between the forecasted and measured values can be reduced by 20 %. Conclusions. Represented is the updated system of the Black Sea Marine Forecasting Center intended for the joint operational sea wave forecasts in the Black Sea and in the Sevastopol region. The results of model validation have shown that the procedure proposed for tuning the SWAN model makes it possible to reduce the deviations of the forecasted wave heights from those measured by the sensors installed at the altimetry satellites.

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Section: Introductionmentioning

confidence: 99%

Updated System for the Sea Wave Operational Forecast of the Black Sea Marine Forecasting Center

Ratner¹,

Fomin²,

Kholod³

et al. 2021

PhO

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“…Анализу данных на гидрометеорологических станциях посвящены работы [Репетин, 2003; Горячкин, Репетин, 2009]. Анализу волнового климата прибрежной зоны на основе результатов математического моделирования посвящена работа [Divinsky, Kosyan, 2018], однако ближайшие анализируемые точки расположены в районе м. Сарыч и г. Алушта (в 30 км от района исследований).…”

Section: Introductionunclassified

Mathematical simulation of the Ay-Todor bay wave regime

Kharitonova

Alekseev

Фомін

2021

ICIGIS

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Investigation of wave regime of coastal water areas is practically important for safe shipping, constructing and using of coastal infrastructure objects. At the present paper statistical characteristics and space distribution of parameters of wind waves in the Ay-Todor Bay region placed on the Crimea South Coast of the Black Sea are obtained on the basis of mathematical simulation. Analysis of the wind wave parameters for the year diapason of 1979–2017 has shown that waves running from the east and having 0.5 m heights and 3.0–3.5 s mean periods are the most repeatable. The most durable storms are formed by waves coming from East–South-South-West sector in the period from December to January. The multiannual calm duration is equal to ~11 days. Estimation of extremal characteristics (height, period and length) of wind waves of different probability, which possible one time in a year, 5, 10, 25, 50 and 100 years are made. For the storm probable one time in 25 years the mean wave height near the boundary of the Ay-Todor Bay is equal to 4.5 m. For this storm the wave height of 1% probability reaches 9.6 m. For the directions of winds of 4 % regime probability which causes the most dangerous waves calculations of wave characteristics with high space resolution (~1.5 m) are carried out by using of SWAN model and nested grid technology. Fields of significant wave height, mean wave length, bottom wave orbital velocities and space distribution of wave breaking zones are analyzed. It is found that most intensive waves are generated by wind having south-east, east and south directions. Maximal bottom orbital velocities of wave current reaches of 2.5–3.5 m/s and occurs along the coast till 10 m depth. Model calculation of wave currents by using of SWASH model allowed obtained presence in the coastal zone near beach of local cyclonic eddy, which transport suspended sediments along its south edge from beach towards the sea.

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