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  2. Dispersion (water waves) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(water_waves)

    In shallow water, the group velocity is equal to the shallow-water phase velocity. This is because shallow water waves are not dispersive. In deep water, the group velocity is equal to half the phase velocity: {{math|c g = ⁠ 1 / 2 ⁠ c p. [7] The group velocity also turns out to be the energy transport velocity.

  3. Shallow water drilling - Wikipedia

    en.wikipedia.org/wiki/Shallow_water_drilling

    Shallow water drilling is the process of oil and gas exploration and production in less than 150 meters (500 feet) of water. [1] Shallow water drilling differs from deepwater drilling in several key aspects. Shallow water rigs have legs that reach the bottom of the sea floor and have blowout preventers (BOPs) above the surface of the water that ...

  4. Airy wave theory - Wikipedia

    en.wikipedia.org/wiki/Airy_wave_theory

    Visualization of deep and shallow water waves by relating wavelength to depth to bed. deep water – for a water depth larger than half the wavelength , h > ⁠ 1 / 2 ⁠ λ , the phase speed of the waves is hardly influenced by depth (this is the case for most wind waves on the sea and ocean surface), [ 9 ]

  5. Cnoidal wave - Wikipedia

    en.wikipedia.org/wiki/Cnoidal_wave

    US Army bombers flying over near-periodic swell in shallow water, close to the Panama coast (1933). The sharp crests and very flat troughs are characteristic for cnoidal waves. In fluid dynamics, a cnoidal wave is a nonlinear and exact periodic wave solution of the Korteweg–de Vries equation.

  6. List of wastewater treatment technologies - Wikipedia

    en.wikipedia.org/wiki/List_of_wastewater...

    Oilwater separator; Organisms used in water purification; Parallel plate oilwater separator; Photobioreactor; Reed bed; Regenerative thermal oxidizer; Retention basin; Reverse osmosis; Rotating biological contactor; Sand filter; Screen filter; Sedimentation (water treatment) Septic tank; Septic tank conversion [2] Sequencing batch reactor ...

  7. Ursell number - Wikipedia

    en.wikipedia.org/wiki/Ursell_number

    h : the mean water depth, and; λ : the wavelength, which has to be large compared to the depth, λ ≫ h. So the Ursell parameter U is the relative wave height H / h times the relative wavelength λ / h squared. For long waves (λ ≫ h) with small Ursell number, U ≪ 32 π 2 / 3 ≈ 100, [3] linear wave theory is applicable.