DAMAGF TO PORT FACILITIES OF IIDA PORT CAUSED BY THE NOTO PENINSULA EARTHQUAKE AND TSUNAMI

Abstract

 The tsunami generated by the Noto Peninsula earthquake damaged breakwaters, seawalls, and wharves in many areas. The damage to Iida Port in Suzu City was particularly severe. In this study, the actual situation of the damage and its factors were analyzed based on field surveys, images from surveillance cameras at the ports of Iida and Wajima, and tsunami inundation simulations. As a result, no tsunami inundation damage was observed at the port of Wajima, and tsunami damage was not remarkable. On the other hand, the second wave of tsunami hit Iida Port from two directions, and the base and tip of the east breakwater were severely damaged by the tsunami overflowing. In some cases, the ground behind the quay wall, which had been deformed by the earthquake, was subsided due to the sand leakage by the wind waves that followed.