2007 Volume 54 Pages 671-675
This paper presents the observation method for the current in the surf zone where topography change is intensive, based on images taken from camera of the sea surface near the coast. To predict the current velocity, the images analysis technique proposed by Suzuki et al.(2005) has been used. The observation is carried out for the duration of one year, from January to December 2006, when the erosion process is actualized in Miyazaki coast. The result confirmed that the direction of current around Miyazaki coast is generally southward during the observation period. The short-term change of the shoreline ranges from 30 to 40m (the fluctuation is ±15-20m from the average shoreline Position).
