CGRG Bibliography of Canadian Geomorphology
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Author : Adam S. , Toutin Th. , Pietroniro A. , and Brugman M.
Date : 1997
Title : Using ortho-rectified SAR imagery acquired over rugged terrain for thematic applications in glacier hydrology;
Publication : Canadian Journal of Remote Sensing
Issue : 23(1):
Page(s) : 76-80
Abstract
The utility of Synthetic Aperture Radar (SAR) imagery for thematic applications in glacier hydrology, such as snow and ice mapping, is dependent upon proper geometric correction of the imagery. Rectifying geometric errors in radar imagery of mountainous areas is often difficult because of significant distortions arising from the sensor's sensitivity to local topographic relief. Using a method which integrates the satellite orbital and sensor information, ground control points, and digital elevation data, two ERS-1 SAR images of Place Glacier, B.C. are successfully ortho-rectified. The snow line positions and glacier boundary identified on the SAR imagery are within 50 to 75 m of their true locations based on data derived from field work. Satellite derived estimates of common measurements made in glacier hydrology, such as equilibrium line altitude, net mass balance, and accumulation area ratio, illustrate that the restitution accuracy of the ortho-rectification is very reliable.
Bibliography of Canadian Geomorphology