A high degree of negative-correlation (-.85) existed between the final 
interpolated THETA and R images. This indicated that the magnitude of 
displacement was greater in areas where the direction of movement was toward 
the smaller angles of movement and smaller in the direction of the larger 
angles of movement. The range of the direction of movement was between 40 and 
70 degrees from the scan direction. 
In addition to extracting information on the direction and magnitude of 
sea ice floe information, it is important to determine, where possible, the 
rotation of ice floes. To accomplish this, a spatial filter that enhances 
high frequency information from digital images was applied to the THETA 
image. At this time, this technique can only identify the areas where 
rotation has occurred, the direction of rotation, and angle of rotation. Work 
is currently progressing in digitizing visual interpretation results of ice 
types (i.e., first year, multi-year, etc.) and ice floe size with the THETA 
and R images. Once this is done the THETA and R images will be used with the 
two digitized data sets to compute the momentum at each pixel and generate a 
momentum image. 
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