Kelvin wave


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Kelvin wave

[′kel·vən ‚wāv]
(oceanography)
An eastward-propagating internal gravity wave that crosses the Pacific Ocean along the equator and has no north-south velocity component.
A type of wave progression in relatively confined water bodies where, because of Coriolis force, the wave is higher to the right of direction of advance (in the Northern Hemisphere).
References in periodicals archive ?
6b) in response to the combination of the evolving El Nino and the downwelling phase of a strong equatorial oceanic Kelvin wave (section 4c) that was initiated by a westerly wind burst.
In addition, it is interesting to find that, in Figures 8(a), (b), (c), (d), the specular ranges significantly moves towards the scattered angles which are less than the specular angles, because the higher roughness can arise from the Kelvin wave elevation when ship speed increases, which seriously affects the slope distribution of surface.
h] V/[square root of (gh)] > 6 When this threshold is exceeded, the classical, linear Kelvin wave system is modified and specific, non-linear components of wakes frequently exist [31,32].
A sudden relaxation of the trades in the central equatorial Pacific would then allow this warm water to "slosh back" toward the east in the form of an eastward-propagating equatorial Kelvin wave.
At the same time, the drop-off in the winds generates a fast-moving Kelvin wave that crosses the Pacific in 1 to 2 months.
Seasonal averages during 2014 highlighted the El Nino-like signatures in this ENSO-neutral year (see section 4b), with the excitation of a downwelling Kelvin wave in the first quarter of the year associated with westerly winds bursts over the western equatorial Pacific (Fig.
In time series from Revelle, each Kelvin wave is associated with a precipitating event (Fig.
Kelvin waves, warm equatorial swells that signal El Nino, are already shoring up on Peru's coast, Avalos said.
Difficulties in monitoring gravity waves, Rossby waves and Kelvin Waves as well as mixed Rossby and Gravity waves in climate models or atmospheric models because waves are playing major role in distribution of energy in the atmosphere.
When anomalous trade winds shift south they can terminate an El Nino by generating eastward propagating equatorial Kelvin waves that eventually resume upwelling of cold water in the eastern equatorial Pacific.
According to current theory, an El Nino develops when broad so-called Kelvin waves sweep toward the Americas and shut down the upwelling of cold water in the east.