Terrestrial Laser Scanning was used for the examination of a gravel bar at Ilvesheim, Germany (49°28'36" N 8°34'34" E) by Geography students from Heidelberg University.
The gravel bar has been subject of interest since 2011. Every year, a group of students performed a survey in order to learn about the erosion and deposition processes which constantly change the gravel bar's shape and volume.
Laser scanning has become an important method of acquiring high quality 3D-geodata. The method becomes more and more important as it generates highly detailed 3D-models which can be used for a diversity of different analyses.
Here, a RIEGL VZ-400 static terrestrial laser scanner was used. On the basis of the acquired 3D point clouds, further investigations have been carried out. These include the generation of digital terrain models (DTM), multi-temporal volume balance series, a comparison of DTMs (SRTM, Aster, airborne and terrestrial laser scanning) and their effect on hydraulic modelling and automatic hydraulic roughness mapping with different sensors and methods (structure from motion, XBOX Kinect).
Further reading:
Höfle, B., Vetter, M., Pfeifer, N., Mandlburger, G. and Stötter, J. (2009b) Water surface mapping from airborne laserscanning using signal intensity and elevation data. Earth Surface Processes and Landforms, 34(12), pp. 1635--1649.
Höfle, B. and Rutzinger, M. (2011) Topographic airborne LiDAR in geomorphology: A technological perspective. Zeitschrift für Geomorphologie, 55(2), pp. 1--29, DOI: 10.1127/0372-8854/2011/0055S2-0043.
Hämmerle, M., Forbriger, M., Höfle, B. (2013) Multitemporal 3D data capturing and GIS analysis of fluvial processes and geomorphological changes with terrestrial laser scanning. Geophysical Research Abstracts 15 (EGU2013-1748) pp. 1--1
