Abstract
To clarify the sediment dynamics at the Fukiage Beach which is located in the southwestern part of Awaji island in west Japan, cluster analysis for the aerial photograph were carried out. And the amount of blown sand were estimated using by the monthly prevailing wind direction and the mean wind speed. Main results are as follows;(1) The sediment dynamics at the Fukiage beach has been in equilibrium in past 36 years.(2) The mean wind speed is 2.5 - 3.0 m/s in the vicinity of the Fukiage beach. The wind direction was stood out north and south in winter and summer, respectively.(3) The sediment which diameter is 0.1mm or less, can't be transported under the mean wind speed.
