Comparison of Edge Wave Normal Modes

摘要

Both full linear and shallow water edge waves are compared to get a better understanding of edge wave behavior.By using method of separation of variables,we are able to get solution of full linear edge wave presented by Ursell (1952) without derivation.The shallow water edge waves show dispersive features despite being derived from shallow water equations.When bottom slope is mild enough,shallow water edge wave tends to linear edge wave and has some advantages of manipulation.Solution of edge wave generated by a moving landslide of Gaussian shape is constructed by an expansion of shallow water normal modes.Numerical results are presented and discussed on their main features.