Changeset 3341


Ignore:
Timestamp:
Jul 17, 2006, 6:59:51 PM (18 years ago)
Author:
sexton
Message:

another updates

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1 edited

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  • production/onslow_2006/report/computational_setup.tex

    r3340 r3341  
    22determined. Preliminary investigations have indicated that point
    33at which the deep water and shallow water models can exchange data is
    4 sufficiently OK at the
    5 100m bathymetric contour line.
    6 Current computation requirements define a coastline
    7 extent of around 100km.
     4sufficient at the 100m bathymetric contour line\footnote{
    85Preliminary investigations indicate that MOST and ANUGA compare
    96well at the 100m contour line. In addition, the resolution for
    … …  
    129the tsunami wave at the boundary is approximately 20km. A much
    1310higher model resolution will be used in developing the probabilistic
    14 models for further studies.
    15 Therefore, the study area cof around 6300 km$^2$
     11models for further studies.}. Historical runup heights are
     12of the order of 10m and we would expect that a tsunami wave
     13would penetrate no higher for this scenario.
     14Current computation requirements define a coastline
     15extent of around 100km. Therefore, the study area of around 6300 km$^2$
    1616covers approximately 100km of
    1717coastline and extends offshore to the 100m contour line and inshore to
    … …  
    1919
    2020To initiate the modelling, a triangular mesh is constructed to
    21 cover the study region 
    22 The cell size is chosen to balance
     21cover the study region. Each triangular cell is defined a cell area
     22which is chosen to balance
    2323computational time and desired resolution in areas of interest,
    24 particularly in the interface between the on and offshore.
     24particularly in the interface between onshore and offshore.
    2525Figure \ref{fig:onslow_area} illustrates the data extent for the
    2626scenario, the study area and where further mesh refinement has been made.
    … …  
    8585\end{figure}
    8686
    87 To complete the model setup, we illustrate the
    88 tsunami wave from the earthquake source described
    89 in Section \ref{sec:tsunamiscenario} which is used as the boundary condition,
    90 as described in Section \ref{sec:methodology}.
    91 MOST was used to initiate the event and propagate the wave in deep water.
    92 ANUGA uses the MOST wave amplitude and velocity at
    93 the boundary (the 100m contour line as shown in Figure \ref{fig:onslow_area})
    94 and continues to propagate the wave in shallow water and onshore.
    95 To illustrate the form of the tsunami wave, we show the
    96 tsunami wave moving through the point locations shown in
    97 Figure \ref{fig:MOSTsolution} as a surface showing the wave's
    98 amplitude as a function of its spatial location and time.
    99 This figure shows how the wave has been affected by the bathymetry in
    100 arriving at these locations as the amplitude is variable. It is also
    101 important to note that the tsunami is made up of a series of
    102 waves with different amplitudes.
     87The final item to be addressed to complete the model setup is to
     88define the boundary condition. As
     89discussed in Section \ref{sec:tsunamiscenario}, a Mw 9 event provides
     90the tsunami source. The resultant tsunami wave is made up of a series
     91of waves with different amplitudes which is affected by the energy
     92and style of the event as well as the bathymetry whilst it travels
     93from its source to Onslow. The amplitude and velocity of each of these
     94waves are then provided to ANUGA as boundary conditions and propagated
     95inshore.
     96%To complete the model setup, we illustrate the
     97%tsunami wave from the earthquake source described
     98%in Section \ref{sec:tsunamiscenario} which is used as the boundary condition,
     99%as described in Section \ref{sec:methodology}.
     100%MOST was used to initiate the event and propagate the wave in deep water.
     101%ANUGA uses the MOST wave amplitude and velocity at
     102%the boundary (the 100m contour line as shown in Figure \ref{fig:onslow_area})
     103%and continues to propagate the wave in shallow water and onshore.
     104%To illustrate the form of the tsunami wave, we show the
     105%tsunami wave moving through the point locations shown in
     106%Figure \ref{fig:MOSTsolution} as a surface showing the wave's
     107%amplitude as a function of its spatial location and time.
     108%This figure shows how the wave has been affected by the bathymetry in
     109%arriving at these locations as the amplitude is variable. It is also
     110%important to note that the tsunami is made up of a series of
     111%waves with different amplitudes.
    103112
    104 \begin{figure}[hbt]
    105  \centering
    106  \begin{tabular}{cc}
    107 \includegraphics[width=0.49\linewidth, height=50mm]{../report_figures/point_line_3d.png}&
    108 \includegraphics[width=0.49\linewidth, height=50mm]{../report_figures/solution_surfaceMOST.png}\\
    109 (a) & (b) \\
    110 \end{tabular}
    111  \caption{Point locations used to illustrate the form of the tsunami wave and the
    112 corresponding surface function.}
    113  \label{fig:MOSTsolution}
    114  \end{figure}
     113%\begin{figure}[hbt]
     114% \centering
     115% \begin{tabular}{cc}
     116%\includegraphics[width=0.49\linewidth, height=50mm]{../report_figures/point_line_3d.png}&
     117%\includegraphics[width=0.49\linewidth, height=50mm]{../report_figures/solution_surfaceMOST.png}\\
     118%(a) & (b) \\
     119%\end{tabular}
     120% \caption{Point locations used to illustrate the form of the tsunami wave and the
     121%corresponding surface function.}
     122% \label{fig:MOSTsolution}
     123% \end{figure}
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