<%namespace name="tools" file="tools.tex"/>
<%! import os, random %>

The experiments presented in the previous section resulted in a set of scale relations \citep{VanDeGraaff1976}. Moreover, the experiments indicated that the process of dune erosion scaled with the dimensionless parameter $\frac{H}{T \cdot w}$. In order to verify these findings, a series of additional small scale tests is performed in 1976 and 1977 \citep{Vellinga1981}. Again, the Wind Flume of Laboratory De Voorst in The Netherlands was used.

During the additional experiments, only the depth scales 84, 47 and 26 are used. The sediment diameter is varied between 95$\mu$m and 225$\mu$m. Tests with constant and varying waterlevels are performed. Here, only the tests with constant water levels are considered. XBeach is compared to all tests performed on scale 26 plus the tests on the scales 84 and 47 for which a sediment diameter of 225$\mu$m was used. These tests are summarized in \autoref{tab:experiments_M1263II}.

\begin{table}[H]
  \caption{Overview of experiments}
  \label{tab:experiments_M1263II}
  \begin{center}
    \begin{tabular}{lllllll}
      \hline
      Experiment & Scale & Profile     & Sediment & Water & Wave   & Wave   \\ 
                 &       & contraction & diameter & depth & height & period \\ 
      \hline
      111        & 84    & 4.0         & 225      & 0.461 & 0.091  & 1.31   \\ 
      115        & 84    & 2.9         & 225      & 0.461 & 0.091  & 1.31   \\ 
      \hline
      101        & 47    & 3.4         & 225      & 0.585 & 0.163  & 1.76   \\ 
      105        & 47    & 2.5         & 225      & 0.585 & 0.163  & 1.76   \\ 
      \hline
      121        & 26    & 3.0         & 225      & 0.806 & 0.292  & 2.35   \\ 
      122        & 26    & 2.0         & 225      & 0.806 & 0.292  & 2.35   \\ 
      123        & 26    & 2.2         & 150      & 0.806 & 0.292  & 2.35   \\ 
      124        & 26    & 1.5         & 150      & 0.806 & 0.292  & 2.35   \\ 
      125        & 26    & 1.6         & 130      & 0.806 & 0.292  & 2.35   \\ 
      126        & 26    & 1.1         & 130      & 0.806 & 0.292  & 2.35   \\ 
      127        & 26    & 1.3         & 95       & 0.806 & 0.292  & 2.35   \\ 
      128        & 26    & 1.0         & 95       & 0.806 & 0.292  & 2.35   \\ 
      \hline
    \end{tabular}
  \end{center}
\end{table}

\autoref{fig:m1263_2_random_profile} shows the profile comparison of one of the tests from \autoref{tab:experiments_M1263II}. For the other tests, the Brier Skill Score is presented in \autoref{fig:Windflume_M1263_II_bss}.

<%
    images = []
    
    lbl = 'm1263_2_random_profile'
    
    path = os.path.join(base_path, 'Windflume_M1263_II')
    
    if os.path.exists(path):
        dirs = os.listdir(path)
    
        for dir in dirs:
            path2 = os.path.join(path, dir)
        
            if path2[0] != '.' and os.path.isdir(path2):
        
                dirs2 = os.listdir(path2)
                files = []

                for filename in dirs2:
                    file, ext = os.path.splitext(filename)

                    if ext == '.eps':
                        files.append((path2, filename, dir, lbl))

                if len(files)>0:            
                    images.append(files)
    
    if len(images)>0:
        nr = random.randint(0,len(images)-1)
    
        for i in range(len(images[nr])):
            tools.image(*images[nr][i])
            
    else:
        tools.image('', '', '', lbl)
%>

${tools.image('Windflume_M1263_II/', 'bss.eps', 'Overview of Brier Skill Scores')}
