On September 1, 2023, 100 years after the Great Kanto Earthquake, the Hiroshima City Torrential Rain Disaster Museum will open in the Yagi district of Asaminami Ward, the area most severely affected by the landslide that struck Hiroshima City on August 20, 2014. Given the unpredictable nature of risk events, sustainability in risk communication, one of the countermeasures, is important. This article discusses sustainable risk communication methods, focusing on two methods of learning from past disasters: “facilities” and “storytelling by survivors.”

1. [1] Ministry of Land, Infrastructure, Transport and Tourism, “Response to the Landslide Disaster in Hiroshima Prefecture Caused by the August 2014 Torrential Rainfall,” 2014 (in Japanese). https://www.mlit.go.jp/river/sabo/H26_hiroshima/141031_hiroshimadosekiryu.pdf [Accessed July 3, 2023]
2. [2] The city of Hiroshima, “Overview of the Torrential Rain Disaster on August 20, 2014,” 2019 (in Japanese). https://www.city.hiroshima.lg.jp/soshiki/126/5586.html [Accessed July 3, 2023]
3. [3] M. Kaibori, Y. Ishikawa, Y. Satofuka, K. Matsumura, K. Nakatani, Y. Hasegawa, N. Matsumoto, T. Takahara, K. Fukutsuka, K. Yoshino, E. Nagano, M. Fukuda, Y. Nakano, T. Shimada, D. Hori, and T. Nishikawa, “Sediment-related disasters induced by a heavy rainfall in Hiroshima-city on 20th August, 2014,” J. of Japan Society of Erosion Control Engineering, Vol.67, No.4, pp. 49-59, 2014 (in Japanese). https://doi.org/10.11475/sabo.67.4_49
4. [4] Ministry of Land, Infrastructure, Transport and Tourism, “Designation of Landslide Disaster Precaution Areas” (in Japanese). https://www.mlit.go.jp/river/sabo/sinpoupdf/jyoukyou-190331.pdf [Accessed July 3, 2023]
5. [5] M. Isoda, “Reread Japanese History from Natural Disaster: Disaster Prevention Learned from Ancestors,” Chuokoron-Shinsham, Inc., 2014 (in Japanese).
6. [6] The city of Hiroshima, “Hiroshima City Torrential Rain Disaster Memorial Center Ordinance” (in Japanese). https://www.city.hiroshima.lg.jp/kikaku/houki/reiki_int/reiki_honbun/r500RG00001404.html#e000000007 [Accessed July 3, 2023]
7. [7] T. Kusumi, “Citizen’s Perception of Risk,” The Society for Risk Analysis Japan (Ed.), “Encyclopedia of Risk Studies, Revised and Enlarged Edition,” Hankyu Communications, pp. 272-273, 2006 (in Japanese).
8. [8] T. Kinoshita, “The Philosophy and Technology of Risk Communication: The Techniques of Consensus and Trust,” Nakanishiya Publishing Co., 2016 (in Japanese).
9. [9] R. Kawasaki and A. Hikita, “Changing Narratives of Survivors of the 2014 Hiroshima Landslide,” J. Disaster Res., Vol.16, No.3, pp. 443-456, 2021. https://doi.org/10.20965/jdr.2021.p0443