2016 Volume 28 Pages 1-11
Population dramatically decreases after severe earthquake, and it sometimes leads to disparity in recovery. Analysing the case of the Kobe earthquake, this research represents that the recovery process is influenced by strength of tie in population movement, so called spatial interaction. Parameter estimations based on the gravity model are carried out. It shows that movement from the metropolitan district in Osaka attenuates by spatial distance. Power value of distance, which indicates the resistance toward far movement, increases directly after earthquake. To disscuss the effect of interaction between concentrated metropolitan area and others systematically, numerical experiments of population movement in some patterns of large and small cities, are carried out. In order to mitigate the spatial disparity problem, it is necessary to consider the balance of city scale, in other word, gravity equilibrium.
