Abstract
This investigation not only evaluates the accuracy of a portion of a SPOT DEM but evaluates products derived from it; namely, slopes, aspects, and thickness of thaw layer. A DEM was created from an image pair with less than optimum difference between image acquisition angles at a study site in northern Alaska. Root mean square (RMS) errors for elevations were 19.3m and 13.7m and for slopes were 2.7% to 4.0%. Aspects agree in general slope orientation. Even though the area had relatively low relief (~250m with a ~25km2 area), the SPOT-derived DEM provides sufficiently accurate ground elevation, slope gradient, and aspect data for use in ecosystem investigations. -from Authors
Original language | English (US) |
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Pages (from-to) | 815-824 |
Number of pages | 10 |
Journal | Photogrammetric Engineering & Remote Sensing |
Volume | 58 |
Issue number | 6 |
State | Published - Jan 1 1992 |
All Science Journal Classification (ASJC) codes
- Computers in Earth Sciences