Quarter diurnal shelf resonances and tidal bed stress in the English Channel |
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| Authors: | RD Pingree DK Griffiths Linda Maddock |
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| Institution: | 1. Institute of Oceanographic Sciences, Wormley, Godalming, Surrey, U.K.;2. Marine Biological Association of the United Kingdom, Citadel Hill, Plymouth PL1 2PB, U.K. |
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| Abstract: | The mean sea level and mean bed stress due to tidal co-oscillations in the presence of quadratic friction is examined analytically and numerically. In some idealised situations under conditions of near M4 shelf resonances it is shown that phase relationships tend to exist between the M2 tidal currents and the M4 tidal currents which combine to give maximum currents in the flood or ebb direction. In the presence of quadratic friction these effects result in a mean bed stress and affect mean sea level. It is shown that these idealised responses are in part relevant to the sea level differences and sand transport paths due to tides around the British Isles. |
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