Chapter
Dec 31, 2015
Phase-Locking of Modes in the Nearshore: Field Evidence
Authors: J. W. Haines and A. J. BowenAuthor Affiliations
Publication: Coastal Engineering 1988
Abstract
Field investigations have shown that infragravity frequencies may dominate nearshore fluid motions (Bowen and Huntley, 1984). Theoretical studies have suggested that the modal structure of the infragravity field, including the degree of modal coupling, is important in generating complicated beach morphologies (Holman and Bowen, 1982) but previous analyses of field data have not provided a description of the infragravity field which is sufficiently detailed to assess the importance of these ideas.
In this paper we present a statistical method which, when applied to data from any large sensor array, provides the desired description of the infragravity field. The method is applied to data from the NSTS (Nearshore Sediment Transport Study) experiment. The variance of the observed velocity field is described by a set of free wave modes. The results indicate that a complicated infragravity field composed of both edge waves and leaky modes is present. The modes modelled are also found to be significantly coupled over a range of modal pairs and frequencies.
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Published In
Coastal Engineering 1988
Pages: 1522 - 1534
Copyright
© 1989 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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J. W. Haines
Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1 Canada
A. J. Bowen
Department of Oceanography, Dalhousie University, Halifax, NS B3H 4J1 Canada
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.