A Digital Technique to Estimate Polynya Characteristics from Synthetic Aperture Radar Sea-Ice Data

James D. Lyden, Robert A. Shuchman
1987 Journal of Glaciology  
A new technique has been developed to estimate digitally the concentration and structure of open-water leads (polynyas) in synthetic aperture radar (SAR) sea-ice data. This procedure consists of smoothing the original SAR sea-ice data to reduce speckle effects, level slicing this smoothed image to produce a binary image consisting of ice and open water, generating the autocorrelation function of this image, and interpreting the autocorrelation function for lead information. Preliminary results
more » ... reliminary results indicate that this technique yields useful estimates of lead characteristics, but that additional research is required to evaluate fully its performance.
doi:10.3189/s0022143000008765 fatcat:dag5jglk3navhgz66ytvqcdvdm