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Analysis on the Floe Size Distribution in the Arctic Based on Satellite Images
Pages: 50-55
Year: Issue:  2
Journal: Ocean Technology

Keyword:  satellite imagesrestricted growing methodfloe sizeChukchi SeaBeaufort Sea;
Abstract: With intensifying global warming, mankind is witnessing the reduction of sea ice and the increase in open waters. The floe in the Arctic is becoming more susceptible to the effects of great waves and apt to fall apart. Under the process of global warming, it is significant for understanding the balance of the momentum and the heat to study the floe size distributions. The restricted growing method is adopted on three different resolutions of the satellite images to study the floe size distributions during 2014 summer-fall transition in the Chukchi and Beaufort Seas. The satellite images include the Medea, RADARSAT-2 and Landsat8 images with the resolutions of 1 m, 15 m and 100 m, respectively. The range of ?oe sizes with different resolutions provides theoverall distribution across a wide range of ice properties. The restricted method is used to extract the floes automatically to get the floe size distribution following the power-law function distribution with the exponent varying from 0.8 to 1.91. The larger floes correspond the larger exponent which has the tendency of increase with increasing distances from the ice edge location. During the summer-fall transitions, the floes are frozen together to make the smaller floes gradually decrease.
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