ESTIMATING ICE FRACTURES IN THE LAPTEV SEA FROM AIRBORNE SIDE-LOOKING RADAR IMAGES AND FROM METEOR AND NOAA SATELLITE IMAGES

S. M. Losev, Yu. A. Gorbunov, and L. N. Dyment

Using airborne side-looking radar surveys of sea ice it is found that fracture characteristics generalized over the experimental area vary with a change in the threshold width of fracture detection. The equations connecting the relative area of the fractures with their specific length are obtained. Based on the pentad means of the specific length of fractures in November—December calculated for three years from low-resolution satellite imagery, the relative area of the fractures in the Laptev Sea drift ice is estimated.

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