“…Techniques of positioning on various time and space scales have made a lot of progress in the last decade, in particular in the field of geomorphological mapping, or in the realization of Digital Elevation Model (DEM) by numerical photogrammetry (Girault, 1992;Miyazawa et al, 2000;Weber and Herrmann, 2000), radar interferometry (Fruneau et al, 1996;Mohr et al, 1998;Singhroy, 1998;Kimura and Yamaguchi, 2000) or by Global Positioning System (Fix and Burt, 1995;Higgitt and Warburton, 1999). These new technologies present attractive and quick solutions, usable in any type of morphological configuration and provide data easily integrable in a Geographical Information System (GIS) format, with resolutions between tens of metres to centimetres.…”