1:45 PM - 3:15 PM
[O08-P33] Exploration of lessons through dialogue learned from various data of the 2024 Noto Peninsula Earthquake
Keywords:Noto Peninsula Earthquake, Interactive approach with visitors to our poster, Considered lessons from various data
The Noto Peninsula Earthquake occurred at 16:10 on January 1, 2024. According to the Japan Meteorological Agency(JMA), the magnitude of the earthquake was 7.6, with the epicenter in the Noto region of Ishikawa Prefecture. Additionally, a seismic intensity of 7 was recorded in Shika Town,Ishikawa Prefecture.
In the study of the Noto Peninsula Earthquake, including the earthquake generation process,seismic shaking and building damage, tsunami, groundless rumors, and recovery efforts, highly reliable data and information have been carefully selected from various sources, including the websites of the JMA, the Cabinet Office, and Ishikawa Prefecture, as well as public announcements from various news organizations. Records of major destructive earthquakes that have occurred in the Sea of Japan since 1900 were also compiled. Based on the results of this compilation, we considered the lessons hidden in the various data and information.
Here, we provide an example using the tsunami. Table 1 shows the arrival time of the tsunami caused by the Noto Peninsula Earthquake according to the Japan Meteorological Agency.There are several lessons that can be learned from the table.
1. The arrival time of the first wave at Wajima Port in Ishikawa Prefecture (Fig.1) is recorded as 16:10. Since this is the same time as the earthquake's occurrence, there was no time to secure valuables. The lesson here is that in the event of an earthquake, people should evacuate immediately with only their own bodies.
2. Comparing the arrival time of the first wave at Nanao Port in Ishikawa Prefecture (16:37.) with that at Toyama Port in Toyama Prefecture (16:13), we see that Toyama Port is further from the epicenter but the tsunami arrived there sooner than at Nanao Port. According to the Japan Coast Guard's survey of the seafloor topography of Toyama Bay, an undersea landslide has been confirmed to have occurred offshore of Toyama Bay.
It is suggested that this submarine landslide was caused by a tsunami, which may have reached the port of Toyama earlier than the tsunami generated by the epicenter of the Noto Peninsula earthquake. In other words, the lesson here is that tsunamis can reach areas distant from the epicenter very soon after an earthquake occurs, depending on the conditions.
On presentation day at the JpGU 2024 high school student session, we will convey the lessons learned from each of the various documents. The presentation won’t be given in a one-way manner, but in a face-to-face manner, for example by having the participants look at the data summarized. Then, we expect that visitors will think about what they can learn from them. We have adopted this interactive approach for our presentation because we believe that, in order to promote disaster prevention and mitigation, it is important to impress upon visitors and help them remember the lessons learned from each document.The aim of the presentation is to deepen the mutual learning between visitors and the authors through dialogue with those who view the posters.We will also ask visitors to write the lessons they find on sticky notes and attach them to the poster, so that they can share them with many people and deepen their interest of disaster prevention and disaster mitigation.
One of the authors, Tokuda, visited Ishikawa Prefecture from March 30 to April 2, Reiwa 6, because my grandparents live in the Noto region. I visited the Shiromaru area of Suzu-gun Noto-cho (Fig.2), which was damaged by the earthquake, tsunami, and fire, and Asaichi Street in Wajima, which was severely damaged by the fire. At that time, when I asked my grandparents and relatives, "What was the most difficult thing to do immediately after the earthquake?" They all said, "I couldn't use the phone." In fact, they were able to use LINE and phone if they were connected to Wi-Fi, but it was very convenient for them to check the safety of their relatives and friends because they had to evacuate to an evacuation center after the earthquake. In addition, the disaster prevention radio didn't work, and the most important emergency earthquake alert did not sound at the time of the earthquake, so it was not immediately known that there was a risk of a tsunami. The above is also intended to convey what I learned and felt during my visit to the site, and the lessons we can learn from it, through dialogue with the visitors.
In the study of the Noto Peninsula Earthquake, including the earthquake generation process,seismic shaking and building damage, tsunami, groundless rumors, and recovery efforts, highly reliable data and information have been carefully selected from various sources, including the websites of the JMA, the Cabinet Office, and Ishikawa Prefecture, as well as public announcements from various news organizations. Records of major destructive earthquakes that have occurred in the Sea of Japan since 1900 were also compiled. Based on the results of this compilation, we considered the lessons hidden in the various data and information.
Here, we provide an example using the tsunami. Table 1 shows the arrival time of the tsunami caused by the Noto Peninsula Earthquake according to the Japan Meteorological Agency.There are several lessons that can be learned from the table.
1. The arrival time of the first wave at Wajima Port in Ishikawa Prefecture (Fig.1) is recorded as 16:10. Since this is the same time as the earthquake's occurrence, there was no time to secure valuables. The lesson here is that in the event of an earthquake, people should evacuate immediately with only their own bodies.
2. Comparing the arrival time of the first wave at Nanao Port in Ishikawa Prefecture (16:37.) with that at Toyama Port in Toyama Prefecture (16:13), we see that Toyama Port is further from the epicenter but the tsunami arrived there sooner than at Nanao Port. According to the Japan Coast Guard's survey of the seafloor topography of Toyama Bay, an undersea landslide has been confirmed to have occurred offshore of Toyama Bay.
It is suggested that this submarine landslide was caused by a tsunami, which may have reached the port of Toyama earlier than the tsunami generated by the epicenter of the Noto Peninsula earthquake. In other words, the lesson here is that tsunamis can reach areas distant from the epicenter very soon after an earthquake occurs, depending on the conditions.
On presentation day at the JpGU 2024 high school student session, we will convey the lessons learned from each of the various documents. The presentation won’t be given in a one-way manner, but in a face-to-face manner, for example by having the participants look at the data summarized. Then, we expect that visitors will think about what they can learn from them. We have adopted this interactive approach for our presentation because we believe that, in order to promote disaster prevention and mitigation, it is important to impress upon visitors and help them remember the lessons learned from each document.The aim of the presentation is to deepen the mutual learning between visitors and the authors through dialogue with those who view the posters.We will also ask visitors to write the lessons they find on sticky notes and attach them to the poster, so that they can share them with many people and deepen their interest of disaster prevention and disaster mitigation.
One of the authors, Tokuda, visited Ishikawa Prefecture from March 30 to April 2, Reiwa 6, because my grandparents live in the Noto region. I visited the Shiromaru area of Suzu-gun Noto-cho (Fig.2), which was damaged by the earthquake, tsunami, and fire, and Asaichi Street in Wajima, which was severely damaged by the fire. At that time, when I asked my grandparents and relatives, "What was the most difficult thing to do immediately after the earthquake?" They all said, "I couldn't use the phone." In fact, they were able to use LINE and phone if they were connected to Wi-Fi, but it was very convenient for them to check the safety of their relatives and friends because they had to evacuate to an evacuation center after the earthquake. In addition, the disaster prevention radio didn't work, and the most important emergency earthquake alert did not sound at the time of the earthquake, so it was not immediately known that there was a risk of a tsunami. The above is also intended to convey what I learned and felt during my visit to the site, and the lessons we can learn from it, through dialogue with the visitors.