2:15 PM - 2:35 PM
[O09-02] Investigation of Tsunami Damage and Occurrence Mechanisms in the 2024 Noto Peninsula Earthquake
★Invited Papers
Tsunamis up to over 5 m in height were measured along the Japan Sea coast following the Noto Peninsula earthquake (M7.6) that occurred on January 1, 2024. The tsunami was possibly caused by the fault off the Noto Peninsula. Specifically, the NT1-9 faults studied in the Japan Sea Earthquake and Tsunami Research Project (Sato et al., 2021) and the F42 and F43 faults studied by the Ministry of Land, Infrastructure, Transport, and Tourism have been proposed, and it is assumed that the tsunami was caused by their movement. On the other hand, there are many unclear aspects, such as which fault moved and to what extent, and the effect of the tsunami caused by undersea landslides. Fujii and Satake (2024) used an inversion method to determine the amount of slip on the NT1-9 faults and proposed a model that is consistent to some extent with the time-series waveform records of tide gauges and other instruments along the Japan Sea coast. On the other hand, the Coastal Engineering Committee of the Japan Society of Civil Engineers (JSCE) has published the results of measurements of the coastal areas of Ishikawa, Toyama, and Niigata prefectures (Yui et al., 2024), which show that tsunami heights were about 4 to 5 m on the east and west coasts of Ishikawa Prefecture and about 1 to 2 m on the coast of Toyama and Niigata prefectures, except in Joetsu, but locally exceeding 5 m in In Joetsu, however, tsunamis exceeding 5 m have been observed locally.
In this presentation, I will summarize the results of the field survey of tsunami damage and report on the verification of the tsunami generation mechanism that has been clarified through oceanographic surveys.
In this presentation, I will summarize the results of the field survey of tsunami damage and report on the verification of the tsunami generation mechanism that has been clarified through oceanographic surveys.