PORT PLACEMENT THEORY IN CONSIDERATION OF GEOGRAPHICAL CHARACTERISTICS AND DISASTER RISKS IN CASE OF OCEAN SPACE UTILIZATION

摘要

In case of ocean space utilization, the factors which have to be taken into consideration in order to form an international basic container route are geographical factors which are the position on a global scale, the economic scale of port hinterland, the ocean climatic condition for setting the route etc. as well as factors from the viewpoint of transport such as the volume of container cargo and both size of container ships and container terminals. It is important to consider these geographical factors not only in order to study the port placement from the global point of view but also to devise the port policy. Although there are many studies on factors from the viewpoint of transport, there is almost no study on these geographical factors. Then, the authors made a new simulation model and analyzed these geographical factors of the international container ports in all parts of the world. As a result of analysis, the authors got the conclusion that there were three port placement patterns. The first type is 'the Continent Base Port Type', which it is located in the continent and has the large economic hinterland. Typical ports of this type are Antwerp, LA, LB and Shanghai. The second type is 'the Ocean Base Port Type', which is located in the ocean space where geographical predominance is high. This type forms route hubs. Typical ports of this type are Singapore, Malta and Kaohsiung. The third type is 'the Tight Hinterland Port Type', which is located in an island and has the tight economic hinterland where the economic activities density is very high. This type has characteristics that the distance between the ports is short and there are a lot of numbers of ports, which is unique and special in the world. Japan's ports are classified in the third type. Furthermore, Japan has a characteristic that there are many large-scale earthquakes and has to consider earthquake measures to reduce disaster risks. The authors will suggest the most suitable port placement theory in consideration of these characteristics in case of ocean space utilization.