The effect of different terrain representations and resolution on simulated watershed processes

Advances in geomorphometry. Proceedings of the Walter F. Wood memorial symposium

Auteurs :
BAND, L.E.
VERTESSY, R.
LAMMERS, R.B.
PIKE, R.

Description :
The effects of digital elevation model (DEM) resolution on raster and vector terrain data are investigated for the computation of hydrological terrain-soils indices. Tests of the sensitivity of the computed differences in a TOPMODEL-based watershed model reveal greater effects of resolution in the grid-based methods than the contour-based methods. Topological problems are found in all approaches specifically in the representation of stream channel and the area immediately around the stream channel.


Type de document :
Congrès

Source :
Symposium, International Conference on Geomorphology, 3, Hamilton, Canada, 1993-08-23, Zeitschrift für Geomorphologie. Supplementband, issn : 0044-2798, 1995, n°. 101, p. 187-199, Collation : Illustration, Références bibliographiques : 23 ref.

Date :
1995

Editeur :
Pays édition : Allemagne, Berlin ; Stuttgart, Borntraeger