2018 Volume 83 Issue 746 Pages 679-685
In the Great East Japan Earthquake that occurred on March 11, 2011, a huge tsunami damage occurred in the coastal area. Even in coastal areas of Mie Prefecture where the Nankai Trough Earthquake is expected, damage by the tsunami is assumed, but there are many municipalities unknown about the relationship between the disaster history and the subsequent formation of the settlement lands. Furthermore, a flood prediction map due to the tsunami of the Nankai Trough Earthquake is announced by Mie Prefecture, assuming a tsunami fault model assumed to bring the largest class tsunami to the coast of Mie Prefecture, and the maximum inundation area and flooding depth Extract. And in the Great East Japan Earthquake that occurred on March 11, 2011, it has been reported that the local cultural heritage including Shrines and Temples were utilized as a shelter. As historical shrines and temples have repeatedly moved in the past experiencing the damage caused by the tsunami, there is a possibility that they are located in places where it is hard to face disasters.
First, in order to clarify the change in the form of the settlement lands, we collected topographic maps of four age groups (the period of the Meiji · Taisho, · early Showa, immediately after Showa 19 (1952 - 1955) when the Tonankai earthquake occurred, the late Showa era, the latter half of the 1980s) and created transition diagrams of the settlement lands form. Furthermore, based on the results of the Tonankai disaster of the Tonankai Earthquake, the flooded area of the building was identified and plotted on the transition diagram of the settlement lands form.
Secondly, the predicted inundation area of the Nankai Trough Earthquake was plotted in the building inundation area of the Tonankai earthquake based on the tsunami flood prediction.
Third, we plot the tsunami building inundation area in the Tonankai earthquake and the tsunami inundation prediction area of the Nankai Trough earthquake in the present topographical map, and clarified the positional relationship of the shrines and temple. Furthermore, it was confirmed by the literature survey whether the shrine and temple were designated as an official evacuation place. In order to confirm the above analysis results, we conducted interviews and field surveys to the city hall/town hall to the research area.
Findings are as follows. 1st, most settlement lands were formed in the same place from immediately after the Tonankai earthquake to the present. And in more than half of the districts, it is found that the settlement lands expands outside the building inundation area of the Tonankai earthquake. 2nd, It was designated within the building inundation area of the Tonankai earthquake outside the prediction inundation area of the Nankai Trough Earthquake in nearly 50% of the research areas. 3rd, Shrine of 57.7%, Temple of 41.6% are located outside the building inundation area of the Tonankai earthquake and outside the prediction inundation area of the Nankai Trough Earthquake and functions as a shelter.
