Risk Assessment of Cultural Heritages Using Local Hazard Maps and Risk Filters

Abstract eng:
Cultural heritages are indispensable for understanding the history and culture of human beings. Tokyo, the capital of Japan, has more than 8,000 cultural heritages including 2,410 cultural properties designated by the national government. It is extremely important to protect and preserve these cultural heritages, which allow us to understand accurately the history and culture of Japan. Moreover, once a cultural heritage is lost, it is difficult to restore it, and it takes a tremendous amount of labor and cost even if it can be restored. Developing a risk management system is vital to protect effectively the more than 8,000 cultural heritages in Tokyo from natural hazard to enable the passing on of these valuable cultural heritages to the next generation. In this paper, an approach for the risk assessment of cultural heritages against disasters, including earthquakes, fires, floods, and landslides, is proposed. The risk assessment of cultural heritages was carried out using local hazard maps and risk filters. The danger levels against disasters were measured for each city planning district using the local hazard map to determine the danger level at the cultural heritage site. The risk filter is a value that reflects the damage characteristics of a cultural heritage, which are determined by its shape and material quality, in the risk assessment. As a result of the risk analysis, the risk level of cities is obtained.

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