Structured light approach for measuring sea ripple characteristics

Author

Baglio, S. ; Faraci, C. ; Foti, E.

Author_Institution

Dipt. Elettrico, Elettronico e Sistemistico, Catania Univ., Italy

Volume

1

fYear

1998

fDate

28 Sep-1 Oct 1998

Firstpage

449

Abstract

A new approach for measuring ripples which usually cover the sea bed in the nearshore region is presented. The measurement system is based on a structured light technique which allows the contactless estimation of ripple characteristics and the analysis of time evolution of these bedforms. An experimental set-up which includes wave tank, laser sheet generation, video camera and image processing software has been realized. The new proposed procedure allows for obtaining effective estimations of both ripple amplitudes and ripple wavelengths when compared with traditional measurement methodologies. The results of this experimental investigation show in particular that, not only small ripples can be detected and measured with an uncertainty smaller than 1 mm, but even their time evolution can be analyzed

Keywords

geophysical techniques; oceanographic techniques; sand; seafloor phenomena; sediments; amplitude; bedform; image processing; light scattering; marine sediment; measurement technique; nearshore; optical method; sand ripple; sea bed; seabed; seafloor; structured light approach; wavelength; Amplitude estimation; Cameras; Damping; Image processing; Particle measurements; Sea measurements; Sediments; Time measurement; Velocity measurement; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '98 Conference Proceedings

Conference_Location

Nice

Print_ISBN

0-7803-5045-6

Type

conf

DOI

10.1109/OCEANS.1998.725787

Filename

725787