抄録
In recent years, coastal erosion has emerged as a nationwide problem. Toward comprehensive sediment manegement that promotes coastal conservation, the mechanism of wide-area littoral drift needs to be understood.Research on sea sand drift has thus far targeted relatively shallow sea areas, such as the surf zone. For wide-area sediment management, however, a study should be extended to include the role of grain in sand drift and to include sand drift in deep-sea area. As part of this research, an field survey was conducted in the Ishikari coastal deep-area in winter, when significant wave height occur. As a result of this field survey, characteristics of flow and littoral drift were found.
