Nearshore bathymetry from video and the application to rip current predictions for the Dutch Coast

Abstract

ABSTRACT Sembiring, L., Van Dongeren, A., Winter, G., Van Ormondt, M., Briere, C., Roelvink, D., 2014. Nearshore bathymetry from video and the application on rip current predictions for The Dutch Coast. In: Green, A.N. and Cooper, J.A.G. (eds.), Proceedings 13th International Coastal Symposium (Durban, South Africa), Journal of Coastal Research, Special Issue No. 70, pp. 354–359, ISSN 0749-0208. This paper demonstrates the potential use of nearshore bathymetry estimated from video data in a coastal operational model for the Dutch Coast, which provides daily forecast of waves, water levels and (rip) currents. Two video techniques to obtain beach bathymetry from video data- Beach Wizard and CBathy are validated against jet ski surveyed bathymetry. Both methods show good agreement with surveyed data, and bathymetric features of the beach are adequately produced. To assess the applicability of video-derived bathymetry for the purpose of rip current predictions, a model is built for Egmond aan Zee in The Nethe...