Updated About encyclopedia.com content Print Article
S-wave (secondary wave, shear wave, transverse wave) An elastic body wave in which particles oscillate about a fixed point but in a direction perpendicular to the direction of propagation of the wave energy. S-waves cannot travel through a fluid, since a fluid cannot support shear. In an isotropic and homogeneous medium, S-wave velocity (Vs) is given by: Vs = √(μ/ρ), where μ is the shear modulus and ρ the density of the material. S-waves travel at about half the speed of P-waves in a given medium, and can be polarized into SV- and SH-waves in which particle motion is restricted to the vertical and horizontal planes respectively. S-waves can also be generated from the non-normal incidence of P-waves on to an interface, when they are known as ‘converted waves’ and are mostly SV-waves. S-waves can also be converted into P-waves at an interface.
More From encyclopedia.com
Frontal Wave , Skip to main content frontal wave frontal wave Wave-like deformation of the line of a front between two air masses. The wave develops from the northw… Shock Wave , shock wave • n. a sharp change of pressure in a narrow region traveling through a medium, esp. air, caused by explosion or by a body moving faster th… Standing Wave , standing wave Type of wave in which the surface oscillates vertically between fixed points called ‘nodes’, without any forward progression. The crest… Ultrasonics , CONCEPT The word ultrasonic combines the Latin roots ultra, meaning "beyond," and sonic, or sound. The field of ultrasonics thus involves the use of… Tsunami , The word tsunami is derived from Japanese words that translate as ‘harbor wave,’ and refers to the series of waves that arise when a lot of ocean wat… Longshore Drift , Longshore drift Longshore drift is the transport of sand along a beach by waves impinging or breaking at an angle to the beach. Longshore drift occur…