Abstract
Countermeasures against sand beach erosion are carried out by combining various construction methods. These are measures against outflow of sand by artificial structures and waves, but not necessarily assuming global warming. This study aims to provide information necessary for considering adaptation policy to global warming, and we have calculated cost-effectiveness of the policy by using new data concerning impact on sand beach erosion and new estimation model on recreational value of sand beach. Here, some previous public works on sand beach preservation in each prefecture were investigated. The damage cost on recreational value due to sand beach erosion in each prefecture was estimated under the climate model MIROC and the scenarios RCP 2.6 and RCP 8.5. And the cost-effectiveness of adaptation policy was examined.
