Structural Measures against Tsunamis

Ishiwatari, Mikio ; Sagara, Junko

World Bank, Washington, DC

关键词: BAY;    BREAKWATERS;    COAST;    COASTAL AREAS;    COASTAL PLAINS;   

RP-ID  :  79357

学科分类：社会科学、人文和艺术（综合）

来源: World Bank Open Knowledge Repository

【 摘 要 】

Structures such as dikes play a crucialrole in preventing disasters by controlling tsunamis,floods, debris flows, landslides, and other naturalphenomena. However, structural measures alone cannot preventall disasters because they cannot mitigate damages when thehazard exceeds the level that the structures are designed towithstand. The Great East Japan Earthquake (GEJE)demonstrated the limitations of Japan's existingdisaster management systems, which relied too heavily ondikes and other structures. Damage can be kept to a minimumby multilayered approaches to disaster mitigation thatinclude structural and nonstructural measures and thatensure the safe evacuation of residents. This report givesfindings; lessons; and recommendations for developing countries.