Abstract

The Sea of Okhotsk is well known as one of the southernmost seasonal pack-ice zones in the Northern Hemisphere. The pack ice are observing with three radar stations in Esasi, Mombetsu and Abashiri These radars were constructed by Sea Ice Research Laboratory (SIRL) of Institute of Low Temperature Science, Hokkaido University. The pack ice floe is very complex because of having various factors. Therefore, there are many sea accidents in the coast of Okhotsk Sea during the sea-ice season. To avoid these accidents, it is necessary to need some information regarding the movement of the ice pack. However, the radar image is the static information that has the scale and position of the ice pack. There is no information regarding the movement of the ice pack. This paper describes the visualization of the pack ice flow on the Okhotsk Sea with a PIV technique, using a series of radar image that is taken automatically every 3 hours with a computer.

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