SEASONAL AND INTERANNUAL VARIABILITY OF THE WAVE ENERGY FLOW IN THE BARENTS SEA

The paper estimates the seasonal and interannual variability of the wave energy flow for the Barents Sea, where the autonomous power supply of objects on the coast, in the shelf zone and in the open ocean can be most in demand. Numerical calculations of the wind wave parameters were carried out using the wind wave spectral model WaveWatch-III developed at the National Oceanic and Atmospheric Administration (NOAA), and wind data at an altitude of 10 m from NCEP / CFSR reanalysis, which covers the period 1979-2010. The model takes into account the influence of ice, as well as the dissipation of wave energy when approaching the shore, which is of considerable importance in connection with the choice of the object of research (open and coastal areas of the Barents Sea). The calculations were carried out on an original non-structural grid, the spatial resolution of which varies from 15 km in open water areas to 500 m in the coastal zone. The primary results of the simulation are the heights of significant waves and the transfer of wave energy for each node of grid (the time step is 3 hours, the coverage period is 30 years).The results are presented in the form of diagrams of the interannual and intra-annual variability of the wave energy flow, as well as the distribution maps of the flow probability of occurrence. The paper estimates that the flow of wave energy varies in the open part of the sea from 2-5 kW / m in the summer months to 60-100 kW / m in winter; near the coast of the Kola Peninsula, the maximum values of the wave energy flux in the winter months are 20 kW / m; the average multi-year probability of occurrence of wave energy flow (more than 1 kW / m) in the open part of the Barents Sea exceeds 80-90% in all seasons of the year; in the coastal part of the sea, its intra-annual variability is high, in the summer the probability is reduced to 60%.

wave energy flow, Barents Sea, wind wave spectral model WaveWatch-III, reanalysis NCEP / CFSR, variability, probability of occurrence

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