FIELD SURVEY OF DAMAGE DUE TO STORM SURGE AND WAVES IN SHIMIZU AND YAIZU PORTS DURING TYPHOON HAGIBIS

Abstract

 A field survey on damage caused by Typhoon Hagibis in 2019 was conducted in Shimizu and Yaizu ports. The highest sea levels observed in both ports were 1.7 m above the mean sea level, and the sea level rise by the typhoon in Shimizu was about 1 m, which was twice as high as the estimated pressure-driven surge. The survey showed that waves riding on storm surge caused damage to facilities on wharves even protected by breakwaters, while smaller waves hit wharves that could not be directly seen from an opening section of breakwaters especially in Shimizu. To investigate the effects of storm surge and waves on port facilities is important for enhancing port resilience to typhoon disasters.