Forty years wind wave power assessment in the high-energy region of Persian Gulf

The high-energy region of Persian Gulf is investigated due to wave energy level, distribution direction, and stability over 40 years. For this purpose, 40-year ECMWF (ERA-Interim) wind data and GEBCO hydrographic data were used as the inputs for SWAN numerical model, and the wave characteristics and wave power were obtained. For detailed investigations, 15 points were considered to investigate in the high-energy area of the region which was introduced in previous research projects. A linear fit method between Buoy data and modeled data was used to increase the accuracy of the results. Finally, concluded that the northwest part of the middle region of Persian Gulf has had the highest average energy and power level, the southeast part is more sustainable and Optimum Hotspot Identifier and Sustainability Index for Wave Power parameters of this region have a higher value. Results showed that the wave power in the study region has an increasing trend by approximately a mean change rate of 0.03 (kW/m year), and there was an increase in energy level in the western and central parts of region during these 40 years. It was also found that the autumn and winter seasons had the lowest and highest level of power, respectively, and the amount of power in the autumn is approximately half that in the winter. The coefficient of determination (R2) is calculated and concluded that the wave power change rate correlates with a significant wave height change rate than the peak period change rate.