Abstract
Drifting garbage on the sea has a bad influence on economic activity and on coastal environment. Therefore, it is necessary to collect the garbage quickly and to understand the discharged source and the transport route are very important. On this study, the source and route of the garbage were analyzed by using the surface current data obtained by HF Radar and the collection records of garbage by garbage collection ship of the "Beikurin". The discharge date and location were estimated by using results of the convection and diffusion phenomena of 1,000 virtual trashes. Comparison with estimated results and the garbage collection records, reasonable results of discharged location and duration were obtained. From the results, it is suggested that surface current data by HF Radar has applicability to the garbage collection system.
