BEACH EROSION OF YONAHA-MAEBAMA BEACH ON MIYAKO ISLAND

Abstract

 Yonaha-maebama Beach on Miyako Island is a cuspate foreland formed behind Kurima Island. The beach has been stable for a long time except the tip of the cuspate foreland, and it was famous for many tourists. However, in recent years, north part of the cuspate foreland has been eroded and the facilities of the hotel behind the sandy beach were severely damaged owing to beach erosion, causing difficulty in coastal use. To investigate the real situation of the erosion of this beach, shoreline changes were investigated using satellite images together with the field observations using an UAV. Past pictures related to the beach erosion were also collected to study the cause of the beach erosion.