TY - JOUR
T1 - Numerical simulation of urban inundation processes and their hydraulic quantities – tsunami analysis hackathon theme 1 –
AU - Yasuda, Tomohiro
AU - Imai, Kentaro
AU - Shigihara, Yoshinori
AU - Arikawa, Taro
AU - Baba, Toshitaka
AU - Chikasada, Naotaka
AU - Eguchi, Yuuki
AU - Kamiya, Masato
AU - Minami, Masaaki
AU - Miyauchi, Toshiharu
AU - Nojima, Kazuya
AU - Pakoksung, Kwanchai
AU - Suppasri, Anawat
AU - Tominaga, Yuho
N1 - Funding Information:
This research was supported by the Coastal Engineering Committee of the Japanese Society of Civil Engineers. The authors are grateful to Dr. Adi Prasetyo of the Ministry of Public Works and Housing (PUPR), Indonesia, and Prof. Nobuhito Mori of the Disaster Prevention Research Institute (DPRI), Kyoto University, who provided experimental data to the tsunami analysis hacka-thon project. The authors also appreciate Mr. Nobuki Fukui, a Ph.D. student at Kyoto University, who helped with handling the experimental data and to Hiroaki Tsushima of the Meteorological Research Institute (MRI), who joined the discussion at the Tsunami Hackathon. The supercomputer system (Data Analyzer System) used for tsunami analysis during the tsunami analysis hackathon was provided by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). We are also deeply grateful to Dr. Hitoshi Uehara and Mr. Yoshiyuki Imato of the Center for Earth Information Science and Technology (CEIST) and JAMSTEC for their assistance in the seamless utilization of computational resources.
Funding Information:
This research was supported by the Coastal Engineering Committee of the Japanese Society of Civil Engineers. The authors are grateful to Dr. Adi Prasetyo of the Ministry of Public Works and Housing (PUPR), Indonesia, and Prof. Nobuhito Mori of the Disaster Prevention Research Institute (DPRI), Kyoto University, who provided experimental data to the tsunami analysis hackathon project. The authors also appreciate Mr. Nobuki Fukui, a Ph.D. student at Kyoto University, who helped with handling the experimental data and to Hiroaki Tsushima of the Meteorological Research Institute (MRI), who joined the discussion at the Tsunami Hackathon. The supercomputer system (Data Analyzer System) used for tsunami analysis during the tsunami analysis hackathon was provided by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC). We are also deeply grateful to Dr. Hitoshi Uehara and Mr. Yoshiyuki Imato of the Center for Earth Information Science and Technology (CEIST) and JAMSTEC for their assistance in the seamless utilization of computational resources.
Publisher Copyright:
© Fuji Technology Press Ltd.
PY - 2021
Y1 - 2021
N2 - The detailed understanding of tsunami hazard risk using numerical simulations requires a numerical model that can accurately predict tsunami inundation phe-nomena on land. In such models, the structural effects are indirectly considered using the variation of bottom roughness as a proxy for the differences in building densities. Only a few studies have conducted inter-model tests to investigate tsunami inundation in complex coastal urban cities. During the tsunami analysis hackathon held in September 2020, eight research groups met to have a detailed discussion on the cur-rent urban inundation problems. In this study, we conducted an intermodel comparison of the numerical tsunami models, using the data from physical experiments that were performed on a detailed urban model. Our objective was to investigate the necessary conditions of an accurate numerical model based that can ensure high reproducibility and practicality. It was confirmed that the accuracy of topographic data is an important parameter for tsunami inundation simulations in complex urban areas. Based on the computa-tional cost and accuracy, we suggest that a resolution of 1 cm of topographic data is a sufficient condition for tsunami inundation simulations on 1/250 scale model.
AB - The detailed understanding of tsunami hazard risk using numerical simulations requires a numerical model that can accurately predict tsunami inundation phe-nomena on land. In such models, the structural effects are indirectly considered using the variation of bottom roughness as a proxy for the differences in building densities. Only a few studies have conducted inter-model tests to investigate tsunami inundation in complex coastal urban cities. During the tsunami analysis hackathon held in September 2020, eight research groups met to have a detailed discussion on the cur-rent urban inundation problems. In this study, we conducted an intermodel comparison of the numerical tsunami models, using the data from physical experiments that were performed on a detailed urban model. Our objective was to investigate the necessary conditions of an accurate numerical model based that can ensure high reproducibility and practicality. It was confirmed that the accuracy of topographic data is an important parameter for tsunami inundation simulations in complex urban areas. Based on the computa-tional cost and accuracy, we suggest that a resolution of 1 cm of topographic data is a sufficient condition for tsunami inundation simulations on 1/250 scale model.
KW - Numerical models
KW - Re-producibility
KW - Topography data
KW - Tsunami analysis hackathon
KW - Tsunami inundation simulation
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U2 - 10.20965/jdr.2021.p0978
DO - 10.20965/jdr.2021.p0978
M3 - Article
AN - SCOPUS:85116615419
SN - 1881-2473
VL - 16
SP - 978
EP - 993
JO - Journal of Disaster Research
JF - Journal of Disaster Research
IS - 7
ER -