Changeset 7228


Ignore:
Timestamp:
Jun 19, 2009, 12:54:43 PM (16 years ago)
Author:
ole
Message:

Fiddled with text about inundation thresholds

File:
1 edited

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  • anuga_work/publications/boxing_day_validation_2008/patong_validation.tex

    r7227 r7228  
    628628of this data comes uplifted or subsided coral heads. The length of
    629629vector increases with the magnitude of the displacement, the length
    630 corresponding to 1m of observed motion is shown in the top right
     630corresponding to 1 m of observed motion is shown in the top right
    631631corner of the figure. As can be seen, the source model detailed in
    632632Section~\ref{sec:modelGeneration} produces a crustal deformation that
     
    767767%FIXME (Ole): Perhaps rephrase a bit as the 1cm vs 10cm is hard to
    768768%understand.  Remove figure using 1cm inundation
    769 Maximum onshore inundation elevation was computed from the model throughout the entire Patong Bay
    770 region. Figure~\ref{fig:inundationcomparison1cm} shows very good
    771 agreement between the measured and simulated inundation.  However these results are dependent on
    772 the classification used to determine whether a region in in the numerical simulation was inundated.
    773 In Figure~\ref{fig:inundationcomparison1cm} a point in the computational domain was deemed
    774 inundated if at some point in time it was covered by at least 1cm of water.
    775 However the precision of the field measurements is most likely different to the 1cm used
    776 to determine the simulated inundation. The inundation boundary generated by the on-site survey
    777 was determined by observing water marks and other signs left by the receding waters. Consequently
    778 the measurement error along the inundation boundary of the survey varies significantly. However it is
    779 impossible to quantify this error. Figure~\ref{fig:inundationcomparison1cm} shows the simulated
    780 inundation using a threshold of 10cm. An inundation threshold of 10cm was selected for
    781 the current and all future simulations to reflect the likely
    782 accuracy of the survey and subsequently facilitate a more appropriate
    783 comparison between the modelled and observed inundation area.
     769Maximum onshore inundation elevation was computed from the model
     770throughout the entire Patong Bay region.
     771Figure~\ref{fig:inundationcomparison1cm} (left) shows very good
     772agreement between the measured and simulated inundation. However
     773these results are dependent on the classification used to determine
     774whether a region in the numerical simulation was inundated. In
     775Figure~\ref{fig:inundationcomparison1cm} (left) a point in the computational
     776domain was deemed inundated if at some point in time it was covered by
     777at least 1 cm of water. However, the precision of the inundation boundary
     778generated by the on-site survey is most likely less than that as it
     779was determined by observing water marks and other signs
     780left by the receding waters. Consequently the measurement error along
     781the inundation boundary of the survey is likely to vary significantly
     782and somewhat unpredictably.
     783Consequently, an inundation threshold of 10 cm was selected for inundation
     784extents reported in this paper to reflect
     785the more likely accuracy of the survey and subsequently facilitate a more
     786appropriate comparison between the modelled and observed inundation
     787area.
     788Figure~\ref{fig:inundationcomparison1cm} (right) shows the simulated
     789inundation using a larger threshold of 10 cm.
     790
    784791
    785792An animation of this simulation is available on the ANUGA website at \url{https://datamining.anu.edu.au/anuga} or directly from \url{http://tinyurl.com/patong2004}.
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