\chapter{Dune erosion}

In this chapter, the performance of XBeach is compared to results obtained from physical model tests performed in a variety of laboratory facilities and field measurements. Many of those tests are part of fundamental research to dune erosion and other morphological processes. Research took place on different scales, mainly depending on the size of the facility used. The chapter separately discusses small scale laboratory tests (with a depth scale factor $n_d$ between 85 and 15), large scale laboratory tests ($n_d$ between 6 and 2, approaching prototype) and field measurements.

As described in the previous chapter, the relevant skill parameters for accurately predicting dune erosion are the post-storm cross-shore profile, the total eroded volume and the sediment concentration near the water line. For all scales mentioned above, an example will be described in more detail, after which an overview of the performance of all available tests will be presented.

<%include file="dune_erosion_lab_large.tex"/>
<%include file="dune_erosion_lab_small.tex"/>
<%include file="dune_erosion_field.tex"/>
