Small Scale Bedform Types off the South-Holland Coast

ABSTRACT Meirelles, S.; Henriquez, M.; Souza, A.J.; Horner-Devine, A.R.; Pietrzak, J.D.; Rijnsburg, S., and Stive, M.J.F., 2016. Small scale bedform types off the South Holland coast. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 423–426. Coconut Creek (Florida), ISSN 0749-0208. This study presents the small scale bedform states found off the South-Holland coast during a 31+ days field observation of seabed acoustic imagery and near the bed velocities. Six main bed states were encountered: current ripples (C), wave ripples (W), combined wave-current ripples (WC), current ripples with subordinate wave ripples (Cw), wave ripples with subordinate current ripples (Wc) and poorly developed ripples (P). Direct visual detection of the bed state from the images showed good agreement with a simple predictor based on the mobility number. The most frequent...