Offshore stereo measurements of gravity waves

Benetazzo, Alvise; Fedele, Francesco; Gallego, Guillermo; Shih, Ping-Chang; Yezzi, Anthony

Title:

Offshore stereo measurements of gravity waves

dc.contributor.author	Benetazzo, Alvise
dc.contributor.author	Fedele, Francesco
dc.contributor.author	Gallego, Guillermo
dc.contributor.author	Shih, Ping-Chang
dc.contributor.author	Yezzi, Anthony
dc.contributor.corporatename	Georgia Institute of Technology. School of Electrical and Computer Engineering	en_US
dc.contributor.corporatename	Istituto di Scienze Marine – Venezia	en_US
dc.contributor.corporatename	Universidad Politécnica de Madrid. Grupo de Tratamiento de Imagenes	en_US
dc.date.accessioned	2014-11-25T19:21:00Z
dc.date.available	2014-11-25T19:21:00Z
dc.date.issued	2012-06
dc.description	This is the author’s version of a work that was accepted for publication in “Coastal Engineering”. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Coastal Engineering, Vol. 64 (June 2012) DOI: 10.1016/j.coastaleng.2012.01.007	en_US
dc.description	DOI: 10.1016/j.coastaleng.2012.01.007
dc.description.abstract	Stereo video techniques are effective for estimating the space-time wave dynamics over an area of the ocean. Indeed, a stereo camera view allows retrieval of both spatial and temporal data whose statistical content is richer than that of time series data retrieved from point wave probes. To prove this, we consider an application of the Wave Acquisition Stereo System (WASS) for the analysis of offshore video measurements of gravity waves in the Northern Adriatic Sea. In particular, we deployed WASS at the oceanographic platform Acqua Alta, off the Venice coast, Italy. Three experimental studies were performed, and the overlapping field of view of the acquired stereo images covered an area of approximately 1100 m². Analysis of the WASS measurements show that the sea surface can be accurately estimated in space and time together, yielding associated directional spectra and wave statistics that agree well with theoretical models. From the observed wavenumber-frequency spectrum one can also predict the vertical profile of the current flow underneath the wave surface. Finally, future improvements of WASS and applications are discussed.	en_US
dc.embargo.terms	null	en_US
dc.identifier.citation	Benetazzo, A., Fedele, F., Gallego, G., Shih, P., & Yezzi, A. (2012). Offshore stereo measurements of gravity waves. Coastal Engineering, 64, pp. 127-138.	en_US
dc.identifier.doi	10.1016/j.coastaleng.2012.01.007
dc.identifier.issn	0378-3839
dc.identifier.uri	http://hdl.handle.net/1853/52846
dc.language.iso	en_US	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.subject	Current vertical profile	en_US
dc.subject	Stereo measurement	en_US
dc.subject	WASS	en_US
dc.subject	Wave statistics	en_US
dc.subject	Wavenumber-frequency spectrum	en_US
dc.title	Offshore stereo measurements of gravity waves	en_US
dc.type	Text
dc.type.genre	Post-print
dspace.entity.type	Publication
local.contributor.author	Yezzi, Anthony
local.contributor.corporatename	School of Electrical and Computer Engineering
local.contributor.corporatename	College of Engineering
relation.isAuthorOfPublication	53ee63a2-04fd-454f-b094-02a4601962d8
relation.isOrgUnitOfPublication	5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication	7c022d60-21d5-497c-b552-95e489a06569