抄録
By use of a model of semi-circular bay which flanks on a continental shelf and an open sea with deeper depth, scattering of long waves at this irregularity, upon incidence of the edge waves, is elucidated with particular attention to the variations of energy fluxes to three directions, i.e., the windward and leeward along the shelf and toward the open sea. The results emphasize the importance of two resonances; one is the resonance caused by the coupling between the bay and shelf (BS-resonance), while the other that related only to the continental shelf (S-resonance). Circularity of bay affects the partition of energy fluxes to some extent. One of the most important and interesting points that are brought out is the fact that the wave height at the bay head is highest for the second or third, instead of the first, BS-resonance for an intermediate or large shelf width B(=5 or 10). Meanwhile it is highest for the first BS-resonance for a small B(=1).
