2022 Volume 78 Issue 2 Pages I_73-I_78
Beach erosion of the coast near the Aklan River mouth on Panai Island in the Philippines was investigated. After the field observation of the coast in 2014, subsequent investigation using satellite images and field observation was carried out in 2019 together with the study on the deformation of a sand spit formed at the southeast end of a barrier island. Along the coast, beach erosion was triggered by the disruption of continuous movement of sand supplied from the Aklan River associated with the formation of a barrier island and river bed excavation in the tributary of the Aklan River. Seawall was locally constructed from upcoast, so downcoast erosion has been expanding. Large deformation of the sand spit located at the southeast end of the barrier island occurred because of the decrease in sand supply.
