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    Spatial and temporal variations of wave energy in the nearshore waters of the central west coast of India

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    Ann_Geophys_34_1197.pdf (4.741Mb)
    Date
    2016
    Author
    Amrutha, M.M.
    SanilKumar, V.
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    Abstract
    Assessment of wave power potential at different water depths and time is required for identifying a wave power plant location. This study examines the variation in wave power off the central west coast of India at water depths of 30, 9 and 5m based on waverider buoy measured wave data. The study shows a significant reduction (~10 to 27%) in wave power at 9m water depth compared to 30m and the wave power available at 5m water depth is 20 to 23% less than that at 9m. At 9m depth, the seasonal mean value of the wave power varied from 1.6 kWm<sup>-1</sup> in the post-monsoon period (ONDJ) to 15.2kWm<sup>-1</sup> in the Indian summer monssoon (JJAS) period. During the Indian summer monsoon period, the variation of wave power in a day is up to 32kWm<sup>-1</sup>. At 9m water depth, the mean annual wave power is 6kWm<sup>-1</sup> and interannual variations up to 19.3% are observed during 2009-2014. High wave energy (>20kWm<sup>-1</sup>) at the study area is essentially from the directional sector 245-270° and also 75% of the total annual wave energy is from this narrow directional sector, which is advantageous while aligning the wave energy converter
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    http://drs.nio.org/drs/handle/2264/5073
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