| Title | Using Ortho-Rectified SAR Imagery Acquired over Rugged Terrain for Thematic Applications in Glacier Hydrology |
| Download | Downloads (Preprint) |
| Author | Adam, S; Toutin, Th; Pietroniro, A; Brugman, M |
| Source | Canadian Journal of Remote Sensing vol. 23, issue 1, 1997 p. 76-80, https://doi.org/10.1080/07038992.1997.10874681 |
| Year | 1997 |
| Alt Series | Earth Sciences Sector, Contribution Series 20042187 |
| Publisher | Informa UK Limited |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | remote sensing; glacier surveys; snow; SAR imagery; ERS-1; thematic applications; position estimates; accuracy; ortho-rectification |
| Illustrations | flow charts; tables; satellite imagery |
| Released | 2014 07 31 |
| 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. |
| GEOSCAN ID | 218989 |
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