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Detecting Ice Sheet Changes via Optical Image Differencing

NASAThis project is funded by NASA grant NNG06GA60G


To investigate the possible insights that may be provided by careful subtraction of similarly-illuminated and processed satellite images


Ted Scambos

Project Summary

Recent work has indicated that the approach is useful for detecting elevation uplift or lowering due to sub-glacial lake filling and draining. The image shows promise as a confirmation tool for ICESat-measured elevation changes, by indicating the exact extent of the elevation change detected by ICESat's laser profiles.

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