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The beach erosion of the coast around the Aklan River mouth on Panay Island in the Philippines was investigated. After a field observation of the coast in 2014, a subsequent investigation using satellite images and field observation were carried out in 2019 as well as the study on the deformation of a sand spit formed at the southeast end of the barrier island. Along the coast, beach erosion was triggered by the disruption of the continuous movement of sand supplied from the Aklan River associated with the elongation of a barrier island and riverbed excavation in the branch of the Aklan River. A seawall was locally constructed from upcoast; thus, downcoast erosion has expanded. A large deformation of the sand spit located at the southeast end of the barrier island occurred because of the decrease in sand supply.

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Beach Erosion due to Disruption of Continuous Movement of Fluvial Sand and Deformation of a Sand Spit—Aklan River on Panay Island in the Philippines as Example

  • 会议论文

  • 发表日期：

    2026年

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  • Takaaki Uda

摘要

The beach erosion of the coast around the Aklan River mouth on Panay Island in the Philippines was investigated. After a field observation of the coast in 2014, a subsequent investigation using satellite images and field observation were carried out in 2019 as well as the study on the deformation of a sand spit formed at the southeast end of the barrier island. Along the coast, beach erosion was triggered by the disruption of the continuous movement of sand supplied from the Aklan River associated with the elongation of a barrier island and riverbed excavation in the branch of the Aklan River. A seawall was locally constructed from upcoast; thus, downcoast erosion has expanded. A large deformation of the sand spit located at the southeast end of the barrier island occurred because of the decrease in sand supply.