Internal gravity wave: Difference between revisions
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<div class="definition"><div class="short_definition">( | <div class="definition"><div class="short_definition">(''Also called'' internal waves, [[gravity waves]].) A [[wave]] that propagates in [[density]]-stratified fluid under the influence of [[buoyancy]] forces.</div><br/> <div class="paragraph">The [[dispersion relation]] is given by [[frequency]] <div class="display-formula"><blockquote>[[File:ams2001glos-Ie15.gif|link=|center|ams2001glos-Ie15]]</blockquote></div> in which ''N'' is the [[buoyancy frequency]] and ''k''<sub>''h''</sub> is the horizontal component of the [[wavenumber]] vector '''k'''. For all wavenumbers, internal gravity waves have frequency smaller than ''N''. Their [[group velocity]] is perpendicular to the [[phase velocity]] such that the vertical component of the group velocity is opposite in sign to the vertical component of the phase velocity.</div><br/> </div> | ||
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Revision as of 14:29, 20 February 2012
internal gravity wave
(Also called internal waves, gravity waves.) A wave that propagates in density-stratified fluid under the influence of buoyancy forces.
The dispersion relation is given by frequency in which N is the buoyancy frequency and kh is the horizontal component of the wavenumber vector k. For all wavenumbers, internal gravity waves have frequency smaller than N. Their group velocity is perpendicular to the phase velocity such that the vertical component of the group velocity is opposite in sign to the vertical component of the phase velocity.
