Abstract
For the spread of correct knowledge about flood risk, it have been pointed out that the former flood hazard map which informs only the in undation depth around a subject area is not only incomplete but also has harmful effects. To improve such weaknesses, the principle of the summarizable flood hazard map has been proposed. However, the summarizable flood hazard map has also other following technical problems as obstacles on the road to the standardization. First, it is difficult to express complicated flood risk characteristics by this principle of the summarizable flood hazard map. Second, the content of the summarizable flood hazard map always depends heavily on a cartographer's subjectivity.
Accordingly, in order to improve above technical problems, we develop and propose a new technique for making the flood-risk-summarizable mapping.
