Oceanography

Oceanography

The scientific studies of the ocean.

Industry: Earth science

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Oceanography

Equatorial tide

Earth science; Oceanography

Tide occurring when the moon is near the equator; diurnal inequality is at a minimum.

Using the same principles as single-beam echo-sounding, multi-beam or swathe echo-sounding is a method of hydrographic survey using hull-mounted arrays which transmit sound beams perpendicular to the ...

Perigean tide

Earth science; Oceanography

Tide of increased range occurring when the moon is near perigee.

Kelvin-Helmholtz billows

Earth science; Oceanography

Vortical structures that result from the growth and nonlinear development of unstable waves in a shear flow. The billows get their name from the instability responsible for the growth of the ...

Gravity wave

Earth science; Oceanography

Waves that propagate under the influence of buoyancy forces. Gravity waves include surface gravity waves, such as waves on the surface of the ocean, interfacial gravity waves, such as waves at the ...

Ebb tide

Earth science; Oceanography

Time during the tidal period when the tide is falling. Compare with flood tide.

Wave refraction

Earth science; Oceanography

Wave refraction is the process by which wave crests are bent according to variations in seabed contours. This is because as a wave enters shallow water its speed becomes a function of water depth, ...