...
The advanced model for breach flow slide is only valid for silt, sand and gravel. If thin clay, loam or peat layers are present (< 0.5 m) they can be neglected and regarded as sand layers with low permeability (d50 and d15). The user has to evaluate the soil layers for input in this sense. IN In the case of thick clay layers the computation is only applied on the "sand clusters" in between the clay layers.
...