The processing techniques for hyperspectral images of tidal flats in order to be able to obtain maps of soil classification with discrimination of major grain classes and biota will be further developed and refined. The data will be linked to the erodibility of the surface as a function of geophysical and biotic soil characteristics. Erosion tests will be carried out in the laboratory and the field (using the In-Situ Erosion Flume of the University of Utrecht or another in-situ erosion device).