2:00 PM - 2:15 PM
[HDS08-02] Digital data on damage to wooden houses cause by the 1923 Kanto Earthquake
Keywords:the 1923 Kanto Earthquake, digital data on earthquake damage
A large amount of seismic data is currently being monitored and used to understand the source mechanisms of earthquakes and the distribution of seismic intensity. On the other hand, for the earthquakes that occurred before the current seismic observation network was deployed, distribution of seismic intensity has been plotted using earthquake damage data. This is because the seismographs of older earthquakes are quantitatively and qualitatively insufficient for use in seismological analyses.
The 1923 Kanto earthquake is one of the earthquakes for which the damage data are the key to the elucidation of the earthquake. Damage data for the Kanto earthquake were reported by Matsuzawa (1925) and by the Ministry of Affairs (1926). Subsequently, Moroi and Takemura (2002) re-examined the damage data of Matsuzawa (1925) and the Ministry of Affairs (1926) and presented the earthquake damage to wooden houses caused by the giant earthquake. This data set is used to make the well-known map of the seismic intensity distribution of the 1923 Kanto earthquake. However, the data set of Moroi and Takemura (2002) is difficult to use for numerical analysis in seismology, such as attenuation relations of ground motion and/or an analysis of site amplification factor because the damage data of Moroi and Takemura (2002) does not have point location information, although the name of the municipality is given. In addition, the data are only presented on the paper and are not published as digital data. Therefore, we added the point location information to the damage data of Moroi and Takemura (2002).
In our data, the point location information (longitude and latititude) is given by the local government ID index (https://geoshape.ex.nii.ac.jp/city/). In most cases, public facilities located in populated areas seem to be assigned as the ID index.
The digital data of the 1923 Kanto earthquake will be available from the Earthquake Research Institute, the University of Tokyo as one of a digital data of earthquake damage caused by old earthquakes (see the web page of Joint Usage).
The 1923 Kanto earthquake is one of the earthquakes for which the damage data are the key to the elucidation of the earthquake. Damage data for the Kanto earthquake were reported by Matsuzawa (1925) and by the Ministry of Affairs (1926). Subsequently, Moroi and Takemura (2002) re-examined the damage data of Matsuzawa (1925) and the Ministry of Affairs (1926) and presented the earthquake damage to wooden houses caused by the giant earthquake. This data set is used to make the well-known map of the seismic intensity distribution of the 1923 Kanto earthquake. However, the data set of Moroi and Takemura (2002) is difficult to use for numerical analysis in seismology, such as attenuation relations of ground motion and/or an analysis of site amplification factor because the damage data of Moroi and Takemura (2002) does not have point location information, although the name of the municipality is given. In addition, the data are only presented on the paper and are not published as digital data. Therefore, we added the point location information to the damage data of Moroi and Takemura (2002).
In our data, the point location information (longitude and latititude) is given by the local government ID index (https://geoshape.ex.nii.ac.jp/city/). In most cases, public facilities located in populated areas seem to be assigned as the ID index.
The digital data of the 1923 Kanto earthquake will be available from the Earthquake Research Institute, the University of Tokyo as one of a digital data of earthquake damage caused by old earthquakes (see the web page of Joint Usage).