Perturbation of dispersive shallow water waves

This paper addresses the dynamics of dispersive shallow water wave that is governed by the Rosenau-KdV equation with power law nonlinearity. The singular 1-soliton solution is derived by the ansatz method. Subsequently, the soliton perturbation theory is applied to obtain the adiabatic parameter dynamics of the water waves. Finally, the integration of the perturbed Rosenau-KdV equation is obtained by the ansatz method as well as the semi-inverse variational principle. (C) 2013 Elsevier Ltd. All rights reserved.