Geoscience Reference
In-Depth Information
0.5 km
8.5 km
1 km
8 km
2 km
7 km
3 km
6 km
kkm
4 km
5 km
4.25 km
4.75 km
4.5 km
4.5 km
(km)
−1,500
−1,000
1,000
1,500
Fig. 3.10 Perturbation of free surface at time moment
t
= 1
,
000 s
of the conditions for wave formation on an inclined ocean bottom: the source of
high-frequency oscillations (the shallow-water area) is 'switched on' faster than its
low-frequency analogue (the deep-water area).
As compared to the case of elastic surface perturbation, the amplitude character-
istics of gravitational waves are not so sensitive to variations in the ocean bottom
profile. Nevertheless, the wave of higher amplitude can be seen to propagate into
the shallow-water area. Anyhow, the wave entering the deep-water area exhibits
greater energy.
The dynamic pressure happens to be the most illustrative characteristic for
describing the wave field throughout the thickness of a water column. In natu-
ral conditions precisely the dynamic pressure can be measured in a most simple
