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Kyushu Journal of Mathematics
Vol. 60 (2006) No. 2 P 267-303

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http://doi.org/10.2206/kyushujm.60.267


The forced Korteweg-de Vries (KdV) equation is the KdV equation with a forcing term and arises as a model for several physical situations. In this paper, we study the validity of this modeling for capillary-gravity waves in an infinitely long canal over an uneven bottom. An underlying background flow of the water together with an uneven bottom causes a deriving force in the KdV equation in some scaling limit. We will show that the solutions of the full problem for capillary-gravity waves split up into two waves moving with different propagation speeds and that the shape of each wave is governed by a forced KdV equation in a slow time scale.

Copyright © 2006 by Faculty of Mathematics, Kyushu University

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