Numerical modeling of wave overwash on low-crested sand barriers

For management of coastal breaching hazards it is critical to be able to assess the potential of coastal barrier breaching as a result of wave actions during storm surges (wave overwash). This phenomenon is known as the breach initiation phase; the mechanisms behind this are not very well understood. In the present study, laboratory experiments...

Numerical modelling of wave overwash at low-crested sand barriers

In overwash beaches, response of a barrier profile as a whole to storm wave attacks can be distinguished into seaward and landward parts that are associated with two respective across-shore driving processes i.e. surge erosion, and overwash. Modeling of overwash relies heavily on the specification of wave overtopping from the seaside (see...

Breaching of dunes - Preliminary quantification of related mechanism and assessment of the probability of occurrence

In order to yield an expression for the probability of breaching, in this desk study the mechanism that play a role in the initiation of breaching of dunes are described and preliminary quantified. In addition a pragmatic description for the assessment of the combined probability of breaching is elaborated. From this it was concluded that...