An optical system for monitoring seabed evolutions at a coastal structure - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2005

An optical system for monitoring seabed evolutions at a coastal structure

Résumé

An optical system has been designed for measuring the bed level, sand grain motions inside the soil and the presence of suspension at the toe of a coastal structure exposed to breaking waves. These measurements were conducted in the framework of the LIMAS project. We show that the soil is not strictly stable even at great depths (about 1 m). The generation of pressure differences in the soil is the main mechanism for this instability at the wall facing the waves. At the corner of the structure, the shear induced by large longitudinal velocities enhances the sediment transport and scour.
Fichier principal
Vignette du fichier
b_b_40855(214)66.pdf (845.59 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00260415 , version 1 (10-02-2020)

Licence

Paternité

Identifiants

Citer

Hervé Michallet, Jean-Paul Barbier-Neyret, Mathieu Mory, I. Piedra-Cueva. An optical system for monitoring seabed evolutions at a coastal structure. ASCE Fifth International Conference on Coastal Dynamics, Apr 2005, Barcelona, Spain. ⟨10.1061/40855(214)66⟩. ⟨hal-00260415⟩
77 Consultations
56 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More