Wind and wave characteristics in the Black Sea based on the SWAN wave model forced with the CFSR winds

2016 ◽  
Vol 126 ◽  
pp. 276-298 ◽  
Author(s):  
Adem Akpınar ◽  
Bilal Bingölbali ◽  
Gerbrant Ph. Van Vledder
Keyword(s):  
Black Sea ◽  
Wave Model ◽  
The Black Sea ◽  
Wave Characteristics

scholarly journals EVALUATION OF THE WAVE CLIMATE OVER THE BLACK SEA: FIELD OBSERVATIONS AND MODELING

2017 ◽  
pp. 20
Author(s):  
Kebir Emre SaraçoÄŸlu ◽  
H. Anıl Guner ◽  
Cihan Åžahin ◽  
Yalçın Yuksel ◽  
Esin Çevik
Keyword(s):  
Black Sea ◽  
Numerical Solutions ◽  
Numerical Models ◽  
Wave Model ◽  
Wave Climate ◽  
Structure Design ◽  
The Black Sea ◽  
Wave Characteristics ◽  
Wave Measurements ◽  
Deep Water Wave

The knowledge of the wave climate is one of the most important data for application of coastal engineering, which includes coastal structure design, sediment transport, coastal erosion and so on. Due to the lack of measurements in many region and high cost of wave measurements, coastal engineers have to estimate wave characteristics using a variety of methods, which comprise empirical and numerical solutions. A variety of empirical and numerical methods have been developed and used for determining wave characteristics. In this study, in order to determine wave climate over the Black Sea, it was used third generation Mike 21 spectral wave model. For this purpose, a series of numerical models were conducted in a way to cover the 13-year period between 1996 and 2008. The obtained results from numerical models were compared to the results of Wind and Deep Water Wave Atlas for Turkish Coasts. It was concluded that the results were highly consistent each other.

Validation of the WAMC4 wave model for the Black Sea

2008 ◽  
Vol 55 (11) ◽  
pp. 881-893 ◽  
Author(s):  
Z. Cherneva ◽  
N. Andreeva ◽  
P. Pilar ◽  
N. Valchev ◽  
P. Petrova ◽  
...  
Keyword(s):  
Black Sea ◽  
Wave Model ◽  
The Black Sea

scholarly journals The Riding Wave Removal Technique: Recent Developments

2009 ◽  
Vol 26 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Eric Werner Schulz
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Nyquist Frequency ◽  
Wave Characteristics ◽  
Frequency Scale ◽  
Recent Advances ◽  
Recent Developments ◽  
Removal Technique ◽  
Lake George

Abstract Recent advances in a technique to identify and catalog waves that ride on larger-scale carrier waves are described in detail. The latest developments allow the riding wave removal technique to correctly identify and replace riding waves at the Nyquist frequency scale. Examples of the technique are provided for two diverse datasets: the Black Sea and Lake George. A sample of the riding wave characteristics extracted using this method is presented.

Evaluation of the numerical wave model (SWAN) for wave simulation in the Black Sea

2012 ◽  
Vol 50-51 ◽  
pp. 80-99 ◽  
Author(s):  
Adem Akpınar ◽  
Gerbrant Ph. van Vledder ◽  
Murat İhsan Kömürcü ◽  
Mehmet Özger
Keyword(s):  
Black Sea ◽  
Wave Model ◽  
The Black Sea ◽  
Wave Simulation ◽  
Numerical Wave

scholarly journals Operational numerical wind-wave model for the Black Sea

2000 ◽  
Vol 1 (1) ◽  
pp. 65
Author(s):  
A. KORTCHEVA ◽  
G. KORTCHEV ◽  
J. M. LEFEVRE
Keyword(s):  
Shallow Water ◽  
Real Time ◽  
Wave Height ◽  
Black Sea ◽  
Water Wave ◽  
Wind Wave ◽  
Wave Model ◽  
The Black Sea ◽  
Sea State ◽  
Height Data

In this paper the discrete spectral shallow water wave model named VAGBUHL1 is presented. This model is used for real-time Black Sea state forecasting. The model was verified against satellite ERS-2 altimeter wave height data.

Wave climate in the Black Sea: description and trend evaluation using new ECMWF-ERA5 reanalysis and wave-current interaction.

2021 ◽  
Author(s):  
Salvatore Causio ◽  
Piero Lionello ◽  
Stefania Angela Ciliberti ◽  
Giovanni Coppini
Keyword(s):  
Black Sea ◽  
Wave Spectrum ◽  
Atmospheric Stability ◽  
Wave Model ◽  
Wave Climate ◽  
The Black Sea ◽  
Wave Direction ◽  
Wave Regime ◽  
Sea Temperature ◽  
Discrete Interaction

<p>This study analyzes the evolution of the wave climate in the Black Sea basin in a 31-year long hindcast (1988-2018) performed with the third-generation wave model WaveWatchIII v5.16, forced by the ECMWF-ERA5 reanalysis winds at 30km of spatial resolution and 1-hour frequency. The wave model is implemented on a grid covering the whole Black Sea, with 3km grid step and is off-line coupled with a NEMO based hydrodynamical model. The wave spectrum is discretized using 24 directional sectors, and 30 frequencies, with 10% increment starting from 0.055Hz. The model is implemented to solve deep water processes, following the WAM Cycle4 model physics, with Ultimate Quickest propagation scheme and GSE alleviation, which is implemented in WWIII. Wind input and dissipation are based on Ardhuin et al. (2010), wave-wave interactions are based on Discrete Interaction Approximation. Currents and air-sea temperature difference are provided to the wave model to account for Doppler shift and atmospheric stability above the sea. Model validation and statistical analysis have been carried out to describe the wave climate of the Black sea, considering the following wave fields: significant wave height (Hs), mean wave period (Tm) and mean wave direction. Statistics as Mean, Maximum, 5<sup>th</sup> percentile and 95<sup>th</sup> statistics have been computed to produce monthly climatologies. The work considers also the evaluation of trends for Hs and Tm, and the evaluation of tendency in the occurrence frequency of mean and max fields for Hs and Tm.</p><p>There is no evidence about an overall trend in Hs and Tm, but tendencies can be highlighted in some months and seasons. The most evident trend occurs in Summer on the whole wave spectrum, with reduction of Hs and Tm in the Eastern basin, and increasing in the South-Western basins. Even the evaluation of occurrence frequencies suggests that Black Sea is subjected to a change in the wave regime.</p>

scholarly journals A Comparative Analysis of the Wind and Wave Climate in the Black Sea Along the Shipping Routes

Water ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 924 ◽  
Author(s):  
Liliana Rusu ◽  
Alina Raileanu ◽  
Florin Onea
Keyword(s):  
Regional Climate Model ◽  
Black Sea ◽  
Climate Model ◽  
Extreme Values ◽  
Regional Climate ◽  
Wave Model ◽  
Wave Climate ◽  
Reanalysis Data ◽  
The Black Sea ◽  
Wind Fields

The aim of the present work is to assess the wind and wave climate in the Black Sea while considering various data sources. A special attention is given to the areas with higher navigation traffic. Thus, the results are analyzed for the sites located close to the main harbors and also along the major trading routes. The wind conditions were evaluated considering two different data sets, the reanalysis data provided by NCEP-CFSR (U.S. National Centers for Environmental Prediction-Climate Forecast System Reanalysis) and the hindcast results given by a Regional Climate Model (RCM) that were retrieved from EURO-CORDEX (European Domain-Coordinated Regional Climate Downscaling Experiment). For the waves, there were considered the results coming from simulations with the SWAN (Simulating Wave Nearshore) model, forced with the above-mentioned two different wind fields. Based on these results, it can be mentioned that the offshore sites seem to show the best correlation between the two datasets for both wind and waves. As regards the nearshore sites, there is a good agreement between the average values of the wind data that are provided by the different datasets, except for the points located in the southern part of the Black Sea. The same trends noticed for the average values remain also valid for the extreme values. Finally, it can be concluded that the results obtained in this study are useful for the evaluation of the wind and wave climate in the Black Sea. Also, they give a more comprehensive picture on how well the wind field provided by the Regional Climate Model, and the wave model forced with this wind, can represent the features of a complex marine environment as the Black Sea is.

scholarly journals Wind waves in the Black Sea: results of a hindcast study

2014 ◽  
Vol 14 (11) ◽  
pp. 2883-2897 ◽  
Author(s):  
V. S. Arkhipkin ◽  
F. N. Gippius ◽  
K. P. Koltermann ◽  
G. V. Surkova
Keyword(s):  
Black Sea ◽  
Initial Conditions ◽  
Wind Waves ◽  
Total Duration ◽  
Wave Model ◽  
Wave Parameter ◽  
The Black Sea ◽  
Storm Activity ◽  
Significant Wave ◽  
Wave Parameters

Abstract. In this study we describe the wind wave fields in the Black Sea. The general aims of the work were the estimation of statistical wave parameters and the assessment of interannual and seasonal wave parameter variability. The domain of this study was the entire Black Sea. Wave parameters were calculated by means of the SWAN wave model on a 5 × 5 km rectangular grid. Initial conditions (wind speed and direction) for the period between 1949 and 2010 were derived from the NCEP/NCAR reanalysis. According to our calculations the average significant wave height on the Black Sea does not exceed 0.7 m. Areas of most significant heavy sea are the southwestern and the northeastern parts of the sea as expressed in the spatial distribution of significant wave heights, wave lengths and periods. Besides, long-term annual variations of wave parameters were estimated. Thus, linear trends of the annual total duration of storms and of their quantity are nearly stable over the hindcast period. However, an intensification of storm activity is observed in the 1960s–1970s.

scholarly journals Estimates of Amplitude Characteristics of Tsunami Wave Run-Up in Various Areas of the Black Sea Coast

2021 ◽  
Author(s):  
A. Yu. Belokon ◽  
Keyword(s):  
Wave Propagation ◽  
Sea Level ◽  
Black Sea ◽  
Tsunami Wave ◽  
Computational Modelling ◽  
Wave Model ◽  
The Black Sea ◽  
Tsunami Propagation ◽  
Tsunami Waves ◽  
Run Up

This paper is devoted to computational modelling of tsunami wave propagation and runup to the shore for some points on the Russian, Turkish, Bulgarian and Ukrainian coasts of the Black Sea. The nonlinear long wave model was used to solve the problem of wave propagation from hydrodynamic tsunami sources, which can constitute the greatest potential danger for the studied coast areas. The hydrodynamic sources were set in the form of an elliptical elevation, the parameters of which were chosen according to the sea level response to an underwater earthquake of magnitude 7. All the sources were located in seismically active areas, where tsunamigenic earthquakes had already occurred, along the 1500 m isobath. Near each of the studied points in the area above 300 m depths, we calculated marigrams, i.e. time-series of sea level fluctuations caused by the passage of waves. Then, a one-dimensional problem of tsunami propagation and run-up on the coast was solved for each of the points under study, where the obtained marigrams were used as boundary conditions. Peculiarities of tsunami wave propagation have been shown depending on the bottom and land relief in the studied areas of the Black Sea. Estimates have been obtained of the sea level maximum rise and fall during surge and subsequent coastal drainage for the characteristic scales of relief irregularity at different points. For possible tsunamigenic earthquakes, the largest splashes may occur in the region of Yalta (2.15 m), Cide (1.9 m), Sevastopol (1.4 m), and Anapa (1.4 m). Tsunami propagation in the Feodosiya and Varna coastal areas is qualitatively similar, with maximum wave heights of 0.64 m and 0.46 m, respectively. The coastlines of Evpatoriya (0.33 m) and Odessa (0.26 m) are least affected by tsunami waves due to the extended shelf.

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