We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Sensitivity of a physically based method for terrain interpolation to initial conditions and its conditioning on stream location.
- Authors
Salvatore Grimaldi; Vanessa Teles; Rafael L. Bras
- Abstract
Production of digital elevation maps often requires interpolation of observations at particular locations. For hydrologic applications the resulting surface should have well defined drainage directions, should reproduce the roughness of natural terrain and should ideally preserve distributions of elevations, slopes and curvatures. The work of J. Niemann et al. (Water Resources Research, 2003, vol. 39, pp. 1017–1032) proposes a physically based interpolation method that is an improvement over commonly used linear or fractal interpolators. The methodology does have difficulty dealing with very sparse initial elevation and boundary flux information. This work suggests that using the commonly available horizontal location of main channels (‘blue lines’) improves the physical interpolation significantly. The results are illustrated on two river basins. Copyright © 2004 John Wiley & Sons, Ltd.
- Subjects
DIGITAL mapping; SLOPES (Physical geography); WATERSHEDS; LANDFORMS
- Publication
Earth Surface Processes & Landforms, 2004, Vol 29, Issue 5, p587
- ISSN
0197-9337
- Publication type
Article
- DOI
10.1002/esp.1053