Changeset 4093
 Timestamp:
 Dec 19, 2006, 3:21:40 PM (17 years ago)
 Location:
 anuga_work/production/sydney_2006
 Files:

 2 added
 6 edited
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anuga_work/production/sydney_2006/report/anuga_setup.tex
r4090 r4093 5 5 \item onshore and offshore elevation data (topographic and bathymetric data, 6 6 see Section \ref{sec:data}), 7 \item initial conditions, such as initial water levels (e.g. determined by tides) ,8 \item boundary conditions (the tsunami source as described in 9 Section \ref{sec:methodology}),and7 \item initial conditions, such as initial water levels (e.g. determined by tides) and the tsunami source 8 as described in Section \ref{sec:methodology}, 9 \item boundary conditions and 10 10 \item computational requirements relating to the mesh construction. 11 11 \end{itemize} … … 79 79 80 80 The final item to be addressed to complete the model setup is the 81 definition of the boundary condition. As 82 discussed in Section \ref{sec:methodology}, a Mw 9 event provides 83 the tsunami source. The resultant tsunami wave is made up of a series 84 of waves with different amplitudes which is affected by the energy 85 and style of the event as well as the bathymetry whilst it travels 86 from its source to Dampier. The amplitude and velocity of each of these 87 waves are then provided to ANUGA as boundary conditions and propagated 88 inshore. 81 definition of the boundary condition. The tsunami source in this 82 study is given as an initial condition, as opposed to a boundary 83 condition to studies when the tsunami is generated by an undersea 84 earthquake. Hence, the boundary conditions for this model will 85 be Dirichlet boundary conditions, that is, all quantities are 86 given constant values. Here, stage and velocity at the boundaries 87 are set to 0. 89 88 90 89 Sea floor friction will generally provide resistance to the water flow … … 104 103 \caption{Parameters used in ANUGA for the the submarine mass failure scenarios.} 105 104 \begin{tabular}{ll}\hline 106 Model parameters & Value \ hline107 friction & 0 108 minimum stored height & 0.1 m \ hline105 Model parameters & Value \\ \hline 106 friction & 0 \\ \hline 107 minimum stored height & 0.1 m \\ \hline 109 108 \end{tabular} 110 109 
anuga_work/production/sydney_2006/report/execsum.tex
r4089 r4093 1 This report is being provided to the Australian Tsunami Warning System Project by the 2 Risk Assessment Methods Project (RAMP). The purpose of this 3 study is to determine the potential tsunami inundation extent generated 1 The purpose of this 2 study is to determine the potential of tsunami inundation generated 4 3 from a range of historical and potential submarine mass failures off 5 the NSW coast. 4 the NSW coast. The outputs of this study are directed to the Australian 5 Tsunami Warning Project and NSW emergency managers. 6 6 7 7 This report describes the modelling methodology (Section \ref{sec:methodology}), 
anuga_work/production/sydney_2006/report/interpretation.tex
r4090 r4093 15 15 16 16 \caption{Parameters used in ANUGA for the the submarine mass failure scenarios.} 17 %\begin{tabular}{llll}\hline18 %Parameter & Bulli & Shovel & Yacaaba\hline19 %Length & 16840m & 13500m & 7050m\hline20 %Width & 8860m & 4350m & 3080m\hline21 %Thickness & 424m & 165m & 144m\hline22 %Density & 1.46 & 1.49 & 1.48\hline23 %Water depth to centre of mass & 2087m & 968m & 1119m\hline24 %Bathymetric slope & 4 \degree & 4 \degree & 3 \degree\hline25 %Angular orientation & 126 \degree & 118 \degree & 133 \degree\hline26 %\end{tabular}17 \begin{tabular}{llll}\hline 18 Parameter & Bulli & Shovel & Yacaaba \\ \hline 19 Length & 16840m & 13500m & 7050m \\ \hline 20 Width & 8860m & 4350m & 3080m \\ \hline 21 Thickness & 424m & 165m & 144m \\ \hline 22 Density & 1.46 & 1.49 & 1.48 \\ \hline 23 Water depth to centre of mass & 2087m & 968m & 1119m \\ \hline 24 Bathymetric slope & 4 \degree & 4 \degree & 3 \degree \\ \hline 25 Angular orientation & 126 \degree & 118 \degree & 133 \degree \\ \hline 26 \end{tabular} 27 27 28 28 \end{center} 
anuga_work/production/sydney_2006/report/modelling_methodology.tex
r4089 r4093 22 22 mass failures modelled here occur much closer to the Australian coastline and do not require a 23 23 separate model for the deep water propagation. Here, we choose to model the submarine mass failure 24 according to the work by Grilli and Watts which provides an inital surface elevation function 25 which can then be propagated ashore. 24 according to the work by Watts and Grilli \cite{watts:smf} 25 which provides an inital surface elevation function 26 which can then be propagated ashore. This model has been based on 27 experimental work by these authors and allows an initial condition to be applied rather 28 than modelling the mechanism of the slide. Therefore, this model is adequate for the purposes of this study 29 to highlight the potential danger from a slide. Further validation work is required before 30 this model is used for detailed impact analysis. 26 31 27 32 To capture the \emph{impact} of a tsunami to a coastal community, we use ANUGA \cite{ON:modsim}. 
anuga_work/production/sydney_2006/report/references.tex
r4089 r4093 14 14 URL: http://www.mssanz.org.au/modsim05/papers/nielsen.pdf 15 15 16 \bibitem{watts:smf} Watts, P., Grilli, S.T., Tappin, D.R. and Fryer, G.J. (2005) 17 Tsunami generation by submarine 18 mass failure Part II: Predictive equations and case studies, 19 Journal of Waterway, Port, Coastal, and Ocean Engineering, 131, 298  310 20 16 21 \bibitem{antt:06} Australian National Tide Tables 2006: 17 22 Australia, Papua New Guinea, Solomon Islands and Antarctica and East Timor. 
anuga_work/production/sydney_2006/report/smfmodel.tex
r4089 r4093 1 Slide nomenclature 1 2 2 3 3 \begin{table} 4 4 \begin{center} 5 \begin{tabular}{ll }\hline6 Variable name & Quantity \ hline7 $b$ & length \ hline8 $w$ & width \ hline9 $T$ & thickness \ hline10 $\gamma$ & density \ hline11 $d$ & water depth to centre of mass 12 $\theta$ & bathymetric slope \hline13 $\psi$ & angular orientaion \ hline14 $C_d$ & drag coefficient \ hline15 $C_m$ & added mass coefficient \ hline5 \begin{tabular}{ll}\hline 6 Variable name & Quantity \\ \hline 7 $b$ & length \\ \hline 8 $w$ & width \\ \hline 9 $T$ & thickness \\ \hline 10 $\gamma$ & density \\ \hline 11 $d$ & water depth to centre of mass \\ \hline 12 $\theta$ & bathymetric slope \\ \hline 13 $\psi$ & angular orientaion \\ \hline 14 $C_d$ & drag coefficient \\ \hline 15 $C_m$ & added mass coefficient \\ \hline 16 16 \end{tabular} 17 17 \end{table}
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