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Detailed Reference Information |
Putrevu, U., Oltman-Shay, J. and Svendsen, I.A. (1995). Effect of alongshore nonuniformities on longshore current predictions. Journal of Geophysical Research 100: doi: 10.1029/95JC01459. issn: 0148-0227. |
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Longshore currents have been primarily modeled by assuming alongshore uniformity. In this paper we revisit the problem of nonuniform longshore currents to refocus attention on the importance of accounting for alongshore nonuniformity in longshore current predictions and to provide an analytical estimate of the importance of this nonunifority. We derive a semianalytical solution for the longshore currents that allows for weak alongshore variations in the bottom topography. The solution shows that the alongshore pressure gradient induced by alongshore variations in the bottom topography could contribute substantially to the forcing for the longshore currents. An example calculation shows that the longshore current could deviate by up to ¿30% from the mean for a ¿10% deviation of the bottom topography. Thus we suggest that in many practical cases it is important to include the alongshore pressure gradient to accurately model longshore currents. ¿ American Geophysical Union 1995 |
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Abstract |
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Keywords
Oceanography, Physical, Currents, Oceanography, Physical, General or miscellaneous, Oceanography, Physical, Nearshore processes, Oceanography, Physical, Surface waves and tides |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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