ACCURACY VERIFICATION OF REAL-TIME FLOW AND PARTICLE TRACKING SIMULATOR BY BUOY EXPERIMENT

Abstract

 We have been developing a real-time current simulation system in order to clarify drifting process of marine litters supplied from a backland and to facilitate their removal. In this study, GPS buoy experiments were carried out to verify the accuracy of the system. Estimation scheme of wind velocity components are modified for better reproducibility. The system outputs were mostly able to trace buoy drifting in terms of flow velocity. The distance between neutral particle and observation buoy was 6.3km at maximum in results of release of four buoys. Computed horizontal flow velocity in the first surface layer, which are used for prediction in our simulator, and at 15cm deep can be used to predict buoy drifting better than that interpolated at sea surface.