<%namespace name="tools" file="tools.tex"/>

In order to test the model performance in prototype conditions, this test studies the impact of the 1953 storm surge on the Dutch coast at Delfland. The initial profile for the simulation is obtained from test T4 of the M1263-III experiment conducted in the Deltaflume \citep{Vellinga1984} and is scaled-up to prototype. The profile is representative for the coast at Delfland. The applied hydrodynamic conditions vary over the storm (see \autoref{fig:1953_storm_surge_hydro}).

There are no observed profiles after the storm, but the erosion volume (above storm surge level) is measured. The mean measured erosion volume is 90$m^3/m$ with a standard deviation of 26$m^3/m$. At the end of the storm surge the dune foot is located approximately 1m above the maximum storm surge level.

${tools.image('1953_storm_surge/BOI/', 'fig1.eps', 'Surge and wave conditions during the 1953 storm surge', '1953_storm_surge_hydro')}

The simulated profile evolution is shown in \autoref{fig:1953_storm_surge_profile}. Evolution of the simulated dune erosion volume is shown in \autoref{fig:1953_storm_surge_morpho}.

% if interpret:

The erosion volume above maximum storm surge level is about 100$m^3/m$. This is in reasonable agreement with the measured erosion volumes (above storm surge level) after the 1953 storm surge which had a mean value of 90$m^3/m$ and a standard deviation of 26$m^3/m$. At the end of the storm surge the dune foot is located approximately 1m above the maximum storm surge level.

It is concluded that the simulated erosion volumes are in reasonable agreement with the observed erosion volumes at Delfland after the 1953 storm surge. In addition the evolution of the simulated dune erosion volume reveals that most dune erosion occurs in a relatively short time interval between t = 10 hours and t = 15 hours when the mean water level is increasing towards the maximum storm surge level. After the peak of the storm surge, the erosion rates are relatively small.

% endif

${tools.image('1953_storm_surge/BOI/', 'final_profiles.eps','Profile development', '1953_storm_surge_profile')}
