Operational prediction of rip currents using numerical model and nearshore bathymetry from video images

L. Sembiring*, M. Van Ormondt, A. R. Van Dongeren, J. A. Roelvink

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)


Rip currents are one of the most dangerous coastal hazards for swimmers. In order to minimize the risk, a coastal operational-process based-model system can be utilized in order to provide forecast of nearshore waves and currents that may endanger beach goers. In this paper, an operational model for rip current prediction by utilizing nearshore bathymetry obtained from video image technique is demonstrated. For the nearshore scale model, XBeach1 is used with which tidal currents, wave induced currents (including the effect of the wave groups) can be simulated simultaneously. Up-to-date bathymetry will be obtained using video images technique, cBathy2. The system will be tested for the Egmond aan Zee beach, located in the northern part of the Dutch coastline. This paper will test the applicability of bathymetry obtained from video technique to be used as input for the numerical modelling system by comparing simulation results using surveyed bathymetry and model results using video bathymetry. Result s show that the video technique is able to produce bathymetry converging towards the ground truth observations. This bathymetry validation will be followed by an example of operational forecasting type of simulation on predicting rip currents. Rip currents flow fields simulated over measured and modeled bathymetries are compared in order to assess the performance of the proposed forecast system.

Original languageEnglish
Title of host publicationInternational Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2016 - The 6th Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction
PublisherAmerican Institute of Physics
ISBN (Electronic)9780735415317
Publication statusPublished - 25 Jul 2017
Event6th International Symposium on Earth Hazard and Disaster Mitigation - Bandung, Indonesia
Duration: 11 Oct 201612 Oct 2016
Conference number: 6


Conference6th International Symposium on Earth Hazard and Disaster Mitigation
Abbreviated titleISEDM 2016


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