Numerical modeling of waves for a tsunami early warning system
Numerical modeling of waves for a tsunami early warning system
Numerical modeling of waves for a tsunami early warning system
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ηR1(m)<br />
ηR2(m)<br />
<strong>Numerical</strong> <strong>modeling</strong> <strong>of</strong> <strong>waves</strong> <strong>for</strong> a <strong>tsunami</strong> <strong>early</strong> <strong>warning</strong> <strong>system</strong><br />
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Figure 4.22: Comparison <strong>of</strong> the numerical data (thick black line) and the<br />
analytical solution one (black thin line)<br />
The general properties <strong>of</strong> the wave field are predicted with satisfactory<br />
accuracy by both mathematical models. Quantities <strong>of</strong> fundamental<br />
engineering insterest such as the maximum elevation are very well<br />
reproduced. The biggest difference in the comparison <strong>of</strong> figure 4.22 appears<br />
in the first incoming wave, which is overestimated in the analytical model<br />
based on shallow water equations.<br />
4.5 Landslide generated <strong>waves</strong> around a<br />
conical island<br />
Further physical experiments which aims at studying the <strong>tsunami</strong> wave field<br />
generated by landslide have been carried out in a large wave tank at the<br />
Research and Experimentation Laboratory <strong>for</strong> Coastal Defence (LIC) <strong>of</strong> the<br />
Technical University <strong>of</strong> Bari, Italy, in cooperation with the Environmental<br />
and Maritime Hydraulics Laboratory Umberto Messina (LIAM) <strong>of</strong> the<br />
University <strong>of</strong> L’Aquila, Italy. They simulate landslide body falling on the<br />
flank <strong>of</strong> a conical island. The conical island was built in order to approximatly<br />
Università degli Studi di Roma Tre - DSIC 67<br />
t(s)