2021 Volume 77 Issue 2 Pages I_99-I_107
The Nankai Trough earthquake, which is said to have a 70-80% probability of occurring in the next 30 years, is expected to cause enormous damage in the Shikoku region. There are about 3, 000 large and small islands in the Seto Inland Sea, and the common problem of these islands is that the population is declining and the population is aging significantly. On the island, stone walls are built on gentle slopes to build houses and fields, and the roads are narrow and steep. In the event of a large-scale disaster, many of these islands may not be able to receive support from the basic municipalities due to damage to port facilities or suspension of operating vessels.
The islands of the Setouchi Sea are also the setting for the Setouchi Triennale of Contemporary Art, which will be held every three years from 2010. On Ogijima, we created an evacuation map that shows the awareness of disaster prevention among the islanders and the tourist and evacuation sites for tourists. The workshop of the islanders' evacuation map creation process increased the closeness between the islanders and increased the momentum for building a mutual support system for the elderly on the island during normal times. Activities are being carried out to create a map of this mutually supportive system and utilize it even in the event of a disaster. Furthermore, as a development of this, a demonstration experiment on the ideal state of the island for the future using IoT has also started. This paper describes examples of these efforts.
