Wave-induced bottom currents on the outer shelf |
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| Authors: | JA Ewing |
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| Institution: | National Institute of Oceanography, Wormley, Surrey Great Britain |
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| Abstract: | Estimates of the wave-induced oscillatory bottom currents available to move sediment on the continental shelf have been made using the Pierson—Moskowitz wave spectrum; the oscillations are substantially stronger than had previously been thought. Near a shelf edge with canyons the wave-induced currents will be locally enhanced by wave refraction by about four times under certain conditions for idealized topography. Local sediment-transport rates will be greater and will occur more frequently than had previously been supposed. |
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