Improvement of hazard countermeasures for coastal roads of Provincial Highway No. 9
Investigate sections on coastal roads of Provincial Highway No. 9 which are vulnerable to inundation and analyze corresponding hazard types. According to the selected coastal environment and deep terrain features, data on the state of the sea, such as tides and waves, have been collected. Detailed numerical simulations have been carried out, and the runup heights and overtopping values are estimated using the existing formula to identify the potential inundation areas of Provincial Highway No. 9 and to revisit the applicability of existing infrastructures which are originally designed to protect the coastal roads. In addition, morphological modeling is applied to help identify the erosion and deposition trends of the selected coastal road sections, and the hazard maps are also provided.