Analysis of relief morphometry by global DEM in the southern part of the European territory of Russia

Abstract

The accuracy of four global digital elevation models (GDEMs) was assessed at five key sites in the European part of Russia. Errors observed in the morphometric parameters were analyzed by comparing GDEMs representing the relief of the selected area with more accurate data (1:10 000 maps) and the remote sensing data. The values and lengths of the slopes were used as the statistical indicators to estimate the accuracy of the models. The results of the comparison show that the slope models SRTM C-SIR and AW3D30 are more consistent with the verification model, while the model of slope lengths ASTER GDEM v.2 is the most accurate one.

Keywords

• digital elevation model
• srtm
• aster
• gis