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  2. Surface wave - Wikipedia

    en.wikipedia.org/wiki/Surface_wave

    This radiative ground wave is known as Norton surface wave, or more properly Norton ground wave, because ground waves in radio propagation are not confined to the surface. Another type of surface wave is the non-radiative, bound-mode Zenneck surface wave or Zenneck–Sommerfeld surface wave .

  3. Shallow water equations - Wikipedia

    en.wikipedia.org/wiki/Shallow_water_equations

    The water experiences five splashes which generate surface gravity waves that propagate away from the splash locations and reflect off the bathtub walls. The shallow-water equations ( SWE ) are a set of hyperbolic partial differential equations (or parabolic if viscous shear is considered) that describe the flow below a pressure surface in a ...

  4. Surface-wave magnitude - Wikipedia

    en.wikipedia.org/wiki/Surface-wave_magnitude

    The formula to calculate surface wave magnitude is: [3] = ⁡ + (), where A is the maximum particle displacement in surface waves (vector sum of the two horizontal displacements) in μm, T is the corresponding period in s (usually 20 ± 2 seconds), Δ is the epicentral distance in °, and

  5. Surface wave inversion - Wikipedia

    en.wikipedia.org/wiki/Surface_wave_inversion

    Surface-wave inversion is the method by which elastic properties, density, and thickness of layers in the subsurface are obtained through analysis of surface-wave dispersion. [2] The entire inversion process requires the gathering of seismic data, the creation of dispersion curves, and finally the inference of subsurface properties.

  6. Airy wave theory - Wikipedia

    en.wikipedia.org/wiki/Airy_wave_theory

    Capillary wave – surface waves under the action of surface tension; Cnoidal wave – nonlinear periodic waves in shallow water, solutions of the Korteweg–de Vries equation; Mild-slope equation – refraction and diffraction of surface waves over varying depth; Ocean surface wave – real water waves as seen in the ocean and sea

  7. Wave equation - Wikipedia

    en.wikipedia.org/wiki/Wave_equation

    The wave equation is a second-order linear partial differential equation for the description of waves or standing wave fields such as mechanical waves (e.g. water waves, sound waves and seismic waves) or electromagnetic waves (including light waves). It arises in fields like acoustics, electromagnetism, and fluid dynamics.

  8. Rayleigh wave - Wikipedia

    en.wikipedia.org/wiki/Rayleigh_wave

    Rayleigh waves are generated by the interaction of P- and S- waves at the surface of the earth, and travel with a velocity that is lower than the P-, S-, and Love wave velocities. Rayleigh waves emanating outward from the epicenter of an earthquake travel along the surface of the earth at about 10 times the speed of sound in air (0.340 km/s ...

  9. List of equations in wave theory - Wikipedia

    en.wikipedia.org/wiki/List_of_equations_in_wave...

    S = surface area kg s −1 [M] [T] −1: ... Wave equation General solution/s Non-dispersive Wave Equation in 3d A = amplitude as function of position and time