Transformation of the Point Spectrum over Variable Bathymetry Regions

Athanassoulis, GA; Belibassakis, KA; Georgiau, YG

dc.contributor.author	Athanassoulis, GA	en
dc.contributor.author	Belibassakis, KA	en
dc.contributor.author	Georgiau, YG	en
dc.date.accessioned	2014-03-01T02:49:35Z
dc.date.available	2014-03-01T02:49:35Z
dc.date.issued	2003	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34634
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0942299184&partnerID=40&md5=13fbde14ba4e74a0576d13a9501bd3ed	en
dc.subject	Bottom pressure	en
dc.subject	Bottom velocity	en
dc.subject	Coupled-modes	en
dc.subject	Variable bathymetry	en
dc.subject	Wave spectrum transformation	en
dc.subject.other	Approximation theory	en
dc.subject.other	Bathymetry	en
dc.subject.other	Electromagnetic wave diffraction	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Mathematical transformations	en
dc.subject.other	Random processes	en
dc.subject.other	Spectrum analysis	en
dc.subject.other	Surface topography	en
dc.subject.other	Transfer functions	en
dc.subject.other	Wave propagation	en
dc.subject.other	Variable bathymetry	en
dc.subject.other	Wave spectrum transformation	en
dc.subject.other	Water waves	en
dc.title	Transformation of the Point Spectrum over Variable Bathymetry Regions	en
heal.type	conferenceItem	en
heal.publicationDate	2003	en
heal.abstract	The problem of transformation of the spectrum of an incident wave system over a region of strongly varying bottom topography is studied, in the context of linear theory. The present work focuses on cases where the typical wave length and the characteristic length of the bottom profile variations are comparable, and the waves propagate in intermediate-to-shallow water depth. The Consistent Coupled-Mode Model (Athanassoulis and Belibassakis, 1999) is exploited for the calculation of the linear transfer function, connecting the incident wave with the wave conditions at each point in the field. Our model takes into account propagation, reflection and diffraction phenomena. The present approach permits the consistent transformation of the full incident wave spectrum over variable bathymetry regions and the calculation of the spatial evolution of point spectra of all interesting wave quantities (free surface elevation, velocity, pressure), at every point in the domain. The present approach can be extended to treat obliquely incident waves, as well as weakly non-linear waves.	en
heal.journalName	Proceedings of the International Offshore and Polar Engineering Conference	en
dc.identifier.spage	1403	en
dc.identifier.epage	1410	en