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Figure 16.15 Earthquake induced effects to a large breakwater (Teunissen)
Wave impact on a slope
Shock effects by a heavy water
wave slamming into a slope cause
acoustic wave effects in the pore
water and the porous matrix of the
soil. The dynamic porous flow field
remains rather local due to viscous
forces (Fig 16.16b), and the dynamic
energy is mainly dissipating through
the saturated soil in the form of fluid-
solid coupled deformations by surface
waves (Raleigh waves), shown in Fig
16.16a, calculated by a numerical
code that incorporates the dynamic
Biot theory (Hölscher). The moments
of extension (tension) occur along the
surface just under the impact and they
are critical to local revetment stability,
see picture at the right (Bezuijen).
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