Abstract
Japan’s major ports must be reorganized as part of the changes in the country’s industrial structure. The Port Management Bodies of the major ports intend to formulate or revise the Port Plan due to these changes.
On the other hand, in Japan, the occurrence of large-scale tsunamis or high tide that exceeds H.H.W.L are expected in the future. When port facilities are damaged by these natural disasters and port functions are paralyzed, the logistics base of the bulk cargo (crude oil, iron ore, coal etc.) which is not suitable for transport by land is more likely to suffer damage because the logistics base is located near the port. The logistics base of the bulk cargo (cereals, automobiles, etc.) and the container cargo which are suitable for long-distance transport by land suffers less damage. The reason for such less damage is that the logistics base is generally located a long way from the port. Port logistics can be restored early with non-damaged ports.
In recent years, Japan also saw increasing damages caused by rising sea levels and growing scale of typhoons due to the influence of climate change.
Today, it is necessary to verify that tsunamis and high tide occur at the same time.
The authors points out the importance of the backup ports using the sacrifice model considering the characteristics of such port logistics, and then, the importance of formulating or revising the port plans to reduce disaster damage from overtopping volumes caused by rising sea levels using Takayama’s method and CADMAS-SURF.
Finally, the authors propose the importance of formulating or revising the port plans to reduce disaster damage to realize these points and to prepare for large-scale natural disasters.
