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    Hindcast of breaking waves and its impact at an island sheltered coast, Karwar

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    Ocean_Dyn_68_1a.pdf (2.003Mb)
    Date
    2018
    Author
    Dora, G.U.
    SanilKumar, V.
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    Abstract
    Variability in the characteristics of depth-induced wave breakers along a non-uniform coastal topography and its impact on the morpho-sedimentary processes is examined at the island sheltered wave-dominated micro-tidal coast, Karwar, west coast of India. Waves are simulated using the coupled wind wave model, SWAN nested in WAVEWATCH III, forced by the reanalysis winds from different sources (NCEP/NCAR, ECMWF, and NCEP/CFSR). Impact of the wave breakers is evaluated through mean longshore current and sediment transport for various wave energy conditions across different coastal morphology. Study revealed that the NCEP/CFSR wind is comparatively reasonable in simulation of nearshore waves using the SWAN model nested by 2D wave spectra generated from WAVEWATCH III. The Galvin formula for estimating mean longshore current using the crest wave period and the Kamphuis approximation for longshore sediment transport is observed realistically at the sheltered coastal environment while the coast interacts with spilling and plunging breakers.
    URI
    https://doi.org/10.1007/s10236-017-1112-x
    http://drs.nio.org/drs/handle/2264/7731
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