Video-Based Detection of Shorelines at Complex Meso-Macro Tidal Beaches

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dc.contributor.authorAlmar, Rafael
dc.contributor.authorRanasinghe, Roshanka
dc.contributor.authorSenechal, Nadia
dc.contributor.authorBonneton, Philippe
dc.contributor.authorRoelvink, Dano
dc.contributor.authorBryan, Karin R.
dc.contributor.authorMarieu, Vincent
dc.contributor.authorParisot, Jean-Paul
dc.date.accessioned2025-01-20T23:56:42Z
dc.date.available2025-01-20T23:56:42Z
dc.date.issued2012
dc.description.abstractRemote video imagery is widely used to acquire measurements of intertidal topography by means of shoreline detection, but, up to now, problems of accuracy were still encountered in the challenging case of energetic waves in nonuniform, meso macro tidal environments. Unique, simultaneous, video-based and global positioning system (GPS)-based measurements of shoreline were undertaken at Truc Vert (France), a beach with such characteristics. An innovative video method, referred to herein as the Minimum Shoreline Variability (MSV) method, was developed to cope with highly variable spatiotemporal shoreline properties. The comparison of video-based and GPS-derived shoreline data sets showed that using images averaged over short periods (30 s), rather than the traditionally used 10-min averaged images, significantly improved the accuracy of shoreline determination. A local video-derived, swash-based shoreline correction was also developed to correct for the MSV error, which was found to be linearly correlated to local swash length. By combining shorter time-averaged images and video derived local swash correction factors, the horizontal root mean square error associated with MSV shorelines was reduced to 1.2 m, which is equivalent to errors reported at more uniform, microtidal, and less-energetic beaches.
dc.fuente.origenWOS
dc.identifier.doi10.2112/JCOASTRES-D-10-00149.1
dc.identifier.issn0749-0208
dc.identifier.urihttps://doi.org/10.2112/JCOASTRES-D-10-00149.1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95171
dc.identifier.wosidWOS:000308774400006
dc.issue.numero5
dc.language.isoen
dc.pagina.final1048
dc.pagina.inicio1040
dc.revistaJournal of coastal research
dc.rightsacceso restringido
dc.subjectVideo imaging
dc.subjectshoreline
dc.subjectswash
dc.subjectintertidal beach morphology
dc.subjectmeso-macro tidal environment
dc.subjectTruc Vert beach
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.titleVideo-Based Detection of Shorelines at Complex Meso-Macro Tidal Beaches
dc.typeartículo
dc.volumen28
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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