[S-SS10] Strong Ground Motion and Earthquake Disaster

[SSS10-P20] Digitalization of paper materials on damage to house house in the Totoumi area caused by the 1944 Tonankai earthquake

*Motoko Ishise¹, Shigeki Nakagawa¹, Naoshi Hirata², Ryoichi Nakamura³ (1.Earthquake Reseach Institute, University of Tokyo, 2.National Research Institute for Earth Science and Disaster Resilience, 3.Naka Earthquake Research)

Keywords:the 1944 Tonankai earthquake, Totomi area, investigation of house damage

There have been attempts to estimate the seismic intensity based on the type and extent of damage caused by an earthquake (e.g., Usami 1995). However, much of the information on damage is only available in paper form. One example is the results of damage surveys for the Tonankai earthquake that occurred in 1944 (e.g., Oba, 1957; Iida, 1985). Oba (1957) surveyed the damage to houses in each village in the Totoumi area, and reported the relationship between the house damage rate and the surface geology: the total house destruction rate reached 100% in one village, while the rate was 0% in an adjacent village, and the distribution was attributed to the types of ground. Understanding and analyzing regional variation in earthquake damage by past earthquake is useful in considering future earthquake disaster prevention. In this study, therefore, we digitized the distribution of damage to houses in the Totoumi area of the 1944 Tonankai earthquake surveyed by Oba (1957).