Numerical modeling of waves for a tsunami early warning system

Numerical modeling of waves for a tsunami early warning system
is even more accentuated: it is easy to distinguish a first wave train, which
almost perfectly superimpose the laboratory measurement, and a second one
which appears only in the numerical model results.
ηS6(m)
ηS9(m)
0.01
0.005
0
−0.005
−0.01
0.01
0.005
0
−0.005
−0.01
15 20 25 30 35 40
15 20 25 30 35 40
t(s)
ηS13(m)
0.01
0.005
0
−0.005
−0.01
15 20 25 30 35 40
t(s)
Figure 4.33: Comparison of the free surface elevations at the back field gauges
position, measured (red dashed line) and obtained from the numerical model
(black solid line). The numerical results are achieved by using the registration
of the free surface elevation at the gauge 12S to estimate the wave source
term.
SS12
3000
2000
1000
0
0 1 2 3
f (Hz)
SS15
3000
2000
1000
0
0 1 2 3
f (Hz)
Figure 4.34: Comparison of the wave energy spectra at gauges 12S (left
panel) and 15S (right panel), measured (red dashed line) and obtained from
the numerical model (black solid line). The numerical results are achieved
by using the registration of the free surface elevation at the gauge 12S to
estimate the wave source term.
Università degli Studi di Roma Tre - DSIC 79