source: anuga_work/production/hobart_2006/report/summary.tex @ 3721

Last change on this file since 3721 was 3721, checked in by sexton, 17 years ago

hobart testing and report making

File size: 1.7 KB
1This report has described the impact on Onslow from a tsunami
2generated by a Mw 9 earthquake on the Sunda Arc subduction zone
3occurring at Highest Astronomical Tide, Lowest Astronomical Tide
4and Mean Sea Level.
5As yet, there is no knowledge of the return period for this event. The
6modelling methodology, assumptions and data sources for the Onslow
7scenario have also been described.
9As shown in Section \ref{sec:data}, it is imperative
10that the best available data is used to increase confidence
11in the inundation maps.
12Given that the Highest Astronomical Tide contour
13line is further from the coast for the DTED data than the DLI data, we
14expect the inundation to extend further and thus be greater than
15that seen in Figure \ref{fig:MSL_max_inundation}.
16The impact modelling
17will result in significantly inflated structural and contents loss figures as well as
18numbers of people affected.
19These results strongly point to the need for the best
20available data so that more accurate predictions regarding the
21inundation can be made.
22An onshore grid resolution of the order
23of tens of metres is required, however, it is more important that the data
24are accurate (or at least well known).
26These scenarios will be revisited once the probabilistic models
27are complete so that a suite of tsunami impact assessments can be made.
28Future activities to support the impact studies on the North West Shelf
32\item Sourcing of data sets,
33\item Investigation of solution sensitivity to cell resolution,
34bathymetry and tsunami source uncertainties,
35\item Location of boundary for simulation study area, and
36\item Investigation of friction coefficients.
Note: See TracBrowser for help on using the repository browser.