Abstract
This paper presented the beach morphological characteristics at Shichiri-mihama Ida coast based on the UAV-SfM/MVS results for 2 years focusing on the volumetric change and the correlation between the run-up height and the morphological change. As a result, erosion predominates in the leeward side between the artificial reefs during high waves and in a wide area during long period waves with a significant period more than 13s. The total volume of Ida coast has increased due to the recently implemented beach nourishment. However, because the foreshore slope of the Ida coast became steep due to the large beach nourishment material, the necessity of sustainable monitoring was suggested. Finally, the possibility to predict the maximum altitude of morphological change in Ida coast foreshores from the calculation of the run-up height by considering the wave direction of the wave after passing through the artificial reef was confirmed.
