Characteristics of Freezing in Ports in Hokkaido, Japan

摘要

Freezing mechanisms in ports are clarified by laboratory experiments, and the characteristics of ports in Hokkaido concerning the freezing conditions and freezing places are investigated based on the data of field surveys. The mechanisms of freezing in ports can be classified into three patterns, and the freezing occurs easily in ports with closed water areas that are very calm, shallow in water depth and restricted in seawater exchange. Furthermore, prediction models of starting day of freezing are proposed.