A Digital Technique to Estimate Polynya Characteristics from Synthetic Aperture Radar Sea-Ice Data
Abstract 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 i...
| Published in: | Journal of Glaciology |
|---|---|
| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
1987
|
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0022143000008765 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000008765 |
| Summary: | Abstract 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 indicate that this technique yields useful estimates of lead characteristics, but that additional research is required to evaluate fully its performance. |
|---|