Related Experiment Video
Updated: Jul 23, 2025

Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
A 5 m dataset of digital terrain model derivatives across mainland France
Léa Panhelleux1, Sébastien Rapinel1, Blandine Lemercier2
1LETG UMR 6554, University of Rennes - CNRS, place du recteur Henri Le Moal, Rennes, 35000, France.
Abstract:
A dataset of three digital terrain model (DTM) derivatives was produced at 5 m spatial resolution across mainland France. This dataset includes (i) a topographic wetness index (TWI) that characterizes potential soil wetness as a function of the contributing area and local slope, (ii) a multi-scale topographic position color composite (MTPCC) that describes the position of a pixel relative to its neighborhood at three spatial scales, and (iii) a vertical distance to channel network index (VDCNI) that expresses the vertical height between the elevation of a pixel and the nearest channel. These three raster layers were derived from the French national airborne DTM at 5 m spatial resolution and the vector layer of the channel network of the national hydrological database. This unprecedented fine-scale dataset opens new insights for geomorphological analysis. It can be used for several purposes, such as environmental modeling, risk assessment, or water-resource management.
More Related Videos
Related Concept Videos
Methods of Obtaining Topography
Topographic Surveying and Contours
Plotting of Topographic Maps
Geoid and Ellipsoid
Precipitation Gravimetry
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Influence of Earth's Curvature and Atmospheric Refraction on Leveling

