Abstract
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Highlights
Piping is one of the geomorphologic processes that are most difficult to quantify, because it can hardly be examined by conventional field survey methods and just as little by most remote sensing methods
Bridging the resolution gap between terrestrial and conventional aerial photography, small-format aerial photography taken by unmanned platforms from low flying heights (50-500 m) has proven to be an excellent tool for gully erosion monitoring in several research studies conducted by the authors (e.g. Marzolff and Ries, 2007; Aber et al, 2010; Marzolff et al, 2011)
Other than from the ground perspective, the spatial orientation of piping holes becomes visible on the small-format aerial photographs, which allows analysing the linear structures and the relation of the locations of piping holes to subsurface-drainage lines
Summary
Piping is one of the geomorphologic processes that are most difficult to quantify, because it can hardly be examined by conventional field survey methods and just as little by most remote sensing methods. PIPING AS A PROCESS OF GULLY EROSION IN SMALLFORMAT AERIAL PHOTOGRAPHY. This kind of high-resolution photo-monitoring enables the documentation of piping forms and provides clues to the process dynamics and to the function of piping as an initializing process for gully incision/erosion.
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