Articles | Volume 15, issue 11
Nat. Hazards Earth Syst. Sci., 15, 2569–2583, 2015
https://doi.org/10.5194/nhess-15-2569-2015
Nat. Hazards Earth Syst. Sci., 15, 2569–2583, 2015
https://doi.org/10.5194/nhess-15-2569-2015

Research article 30 Nov 2015

Research article | 30 Nov 2015

The importance of entrainment and bulking on debris flow runout modeling: examples from the Swiss Alps

F. Frank et al.

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Short summary
The sudden onset of large and erosive debris flows has been observed recently in different catchments in Switzerland, implicating the importance of erosion for debris flow modelling. Therefore, an erosion model was established based on field data (relationship between maximum shear stress and erosion depth and rate) of several debris flows measured at the Illgraben. Erosion model tests at the Spreitgraben showed considerable improvements in runout pattern as well as hydrograph propagation.
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