STUDY ON THE LONG-TERM DEPTH VARIATION OF THE KANMON ROUTE BASED ON THE ANNUAL BATHYMETRY DATA

Abstract

 For the purpose of planning a effective dredging against burial, characteristics of the long-term depth variation of the Kanmon route was examined based on the annual bathymetry data having benn measured since 1995. From the data, it was shown that the whole area of the route has been kept deeper than 12m depth due to dredging. Moreover, it is also shown that a mid of the strait have a tendency of accumulation, though the depth variation due to sediment transportation at Kanmon Strait is small compared with the sea of the Suo area.