Abstract
Sea freezing in harbors during winter causes considerable economic damage to ports, harbors and fishing ports in Hokkaido due to the prevention of fishing and anchorage, damage to ships and other problems.
While countermeasures against sea freezing are proposed, we have been focused on the countermeasure using current caused by air bubbles. We examined the effect of removal of sea ice using simple analytical models which were verified using some experimental data in this report. Displacement of sea ice due to the air bubbles current was not proportional to the air flow rate and did not increase at more than 1×10-3m3/s/m (0.1m3/min/m) of air flow rate. Also, the displacement of sea ice depended greatly on wind speed and direction.
