I friend send me a report made by the Tokyo Government that analyzes potential earthquake risk in Tokyo. At the end of the report the conclusion is this map where the orange-red areas are the riskiest ones and the green-blue ones the safest. I live in a blue zone 🙂
It looks like Tokyo east area is pretty dangerous.
In order to create these colored map many factors were analyzed. For example, the composition of the soil is one of the most important factors of danger when a earthquake occurs. This is how it is explained in one picture in the Tokyo Government report:
The soil composition is one of the most important factors when calculating earthquake disaster risk. For example, in the Kobe earthquake in 1995, the most affected area was full of old house built on top of soil composed mainly by clay and sand. Another of the most important factors is the risk of fire. Areas with many concentrated wood houses are very risky. When a big earthquake disaster happens most of the people die burned. The fire risk is explained in the report with these nice-funny drawings:
This is the cover of the Tokyo Government report about earthquake risk areas in Tokyo.