Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/107123
Title: Nearshore Wave Transformation Domains from Video Imagery
Authors: Andriolo, Umberto 
Keywords: hydrodynamics; beach; coast; remote sensing; shoaling; surf zone; swash zone; wave runup; shoreline; bathymetry
Issue Date: 2019
Publisher: MDPI
Project: FCT - UAS4LITTER (PTDC/EAM-REM/30324/2017) 
SFRH/BD/52558/2014 
FCT - To-SEAlert (PTDC/EAM-OCE/31207/2017) 
FCT - BSAFE4SEA (PTDC/ECI-EGC/31090/2017) 
Serial title, monograph or event: Journal of Marine Science and Engineering
Volume: 7
Issue: 6
Abstract: Within the nearshore area, three wave transformation domains can be distinguished based on the wave properties: shoaling, surf, and swash zones. The identification of these distinct areas is relevant for understanding nearshore wave propagation properties and physical processes, as these zones can be related, for instance, to di erent types of sediment transport. This work presents a technique to automatically retrieve the nearshore wave transformation domains from images taken by coastal video monitoring stations. The technique exploits the pixel intensity variation of image acquisitions, and relates the pixel properties to the distinct wave characteristics. This allows the automated description of spatial and temporal extent of shoaling, surf, and swash zones. The methodology was proven to be robust, and capable of spotting the three distinct zones within the nearshore, both cross-shore and along-shore dimensions. The method can support a wide range of coastal studies, such as nearshore hydrodynamics and sediment transport. It can also allow a faster and improved application of existing video-based techniques for wave breaking height and depth-inversion, among others.
URI: https://hdl.handle.net/10316/107123
ISSN: 2077-1312
DOI: 10.3390/jmse7060186
Rights: openAccess
Appears in Collections:I&D INESCC - Artigos em Revistas Internacionais

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