2022 Volume 78 Issue 2 Pages I_739-I_744
An observation method of both beach topography and the distribution of deposited floating debris using an UAV was developed and field observation was carried out at the Onuki coast south of Oarai. Using this method, longitudinal profiles, the distribution and the number of deposition of floating debris, and the change in ground elevation can be simultaneously measured. Field observations were carried out on 29 May and 18 November 2021. Since floating debris is transported on the sea surface, they deposit near the break in slope between the backshore and sand dune during high tide and storm wave condition. The elevation of the deposition of floating debris increased in response to the wave run-up height.
