A shock wave in water travels faster than a shock wave in air: water is denser. But it's even faster on granite: granite is denser than water. Please wait a moment and try again. To produce a shock wave, an object in a given medium (such as air or water) must travel faster than the local speed of sound. In the case of an aircraft traveling at a high subsonic speed, the air regions around the aircraft can travel at exactly the speed of sound, so that sound waves leaving the aircraft accumulate on top of each other, similar to a traffic jam on a highway.
When a shock wave forms, local atmospheric pressure increases and then spreads sideways. Because of this amplification effect, a shock wave can be very intense, more like an explosion when heard from a distance (not by chance, since explosions create shock waves). Shock wave: strong pressure wave in any elastic medium, such as air, water, or a solid substance, produced by supersonic aircraft, explosions, lightning, or other phenomena that create violent pressure changes. Shock waves differ from sound waves in that the wave front, where compression takes place, is a region of sudden and violent changes in tension, density and temperature.
Because of this, shock waves propagate in a different way than ordinary acoustic waves. In particular, shock waves travel faster than sound and their speed increases as amplitude increases; but the intensity of a shock wave also decreases faster than that of a sound wave, because part of the energy of the shock wave is spent on heating the medium through which it travels. The amplitude of a strong shock wave, created in the air by an explosion, decreases almost like the inverse square of the distance until the wave weakens so much that it obeys the laws of acoustic waves. Shock waves alter the mechanical, electrical and thermal properties of solids and can therefore be used to study the equation of state (a relationship between pressure, temperature and volume) of any material. Your question seems to imply that you think that, in a deep-sea tsunami in which the wave travels at speeds greater than the speed of sound in the air, the water in the wave travels faster than that speed of sound.
The wave travels faster than the speed of sound in air, but the wave's wavelength is so long that the water only rises a few feet in half an hour. In general, the speed of a wave is not the same as the speed of the medium through which the wave travels. Shockwaves are produced when something moves faster than the speed of sound, causing sudden variations in fluid properties. The ship moves faster than the speed of the waves in the water, so the waves have to get out of the way. The bullet is supersonic, so the expanding gases that push it must also be supersonic, but it's not the same as the sonic boom you hear, which only travels at the speed of sound.
Since water itself travels at normal speeds relative to air, there are actually no unusual effects on the surface. In physics, a shock wave (also called a shock wave), or shock, is a type of disturbance that propagates and moves faster than the local speed of sound in the medium. The underlying reason why the usual sound wave and the shock wave travel at different speeds is that air (or any other real acoustic medium) is not linear.