Abstract
In many Japanese cities located on hillsides called “slope towns”, conflicts commonly arise between urban development and disaster prevention. They even dramatically change once a serious natural disaster occurs, thus causing uncertainties to increase in the conflict. This paper deals with this kind of conflict resolution problem. The problem is first formulated by use of metagame analysis. Then the technique of robustness analysis is developed so as to derive the conditions on the players' preference structure. These conditions guarantee that particular outcomes remain in equilibria despite any other remaining uncertainties. A case study of the City of Nagasaki is carried out to demonstrate the applicability of the proposed technique. In conclusion, possible extensions of the technique are suggested for future improvement.
