A Survey of Tidal Currents at Hamato Bay in the Yuge Island

Abstract

Field observation was carried out twice (each 3 days in September, 1994 and in June, 1995) at Hamato Bay in the Yuge Island, located in the middle part of the Seto Inland Sea, to investigate flow patterns of tidal currents using a 1200KHz ADCP. Results of this survey were summerized as follows ; (1) The tidal currents were roughly found to be barotropic at the surveying lines. (2) The geographic eddies were generated around the point B of the AB surveying line owing to the headland effect. (3) At the time of the ebb, the counter currents were turned clockwise at the inside of the bay, and the off-shore currents were roughly found to be formed at the middle part of the bay. (4) In the flood, the counter current were found to flow anti-clockwise along the coast line of the bay.