Role of the Compressibility of Water and of Non-linear Effects in the Formation of Tsunami Waves - Physics of Tsunamis - page 108

1,000 1,000

Fig. 3.3 Dependences of maximum amplitude of 'fast' surface oscillations (thin line) and of maxi-
mum amplitude of gravitational waves (thick line) upon the durations of bottom displacements with
residual deformations (piston-like displacement) and without displacement (membrane-like dis-
placement). Curves 1-4 correspond to distances r = 0, 10, 20 and 40 from the centre of the source.
Calculations were performed for R = 1, 5 and 10

• For model of incompressible liquid:

max

incomp ( t ) . incomp ( t )

min η − 1

0

A = ξ − ξ

In the case of incompressible liquids the dependences of amplitudes and en-
ergies of gravitational waves upon the durations of bottom displacements have
been repeatedly investigated theoretically and experimentally by different authors
[Hammack (1973); Dotsenko (1996a), (1996b); Nosov, Shelkovnikov (1997)]. The