Inertio-gravity wave: Difference between revisions

Latest revision as of 09:57, 30 March 2024

An internal gravity wave propagating under the influence of both buoyancy and Coriolis forces.

The dispersion relation is given by frequency

in which N is the buoyancy frequency, f is the Coriolis parameter, and k_h and k_v are the horizontal and vertical components, respectively, of the wavenumber vector k. For all wave-numbers, inertio-gravity waves have frequency smaller than N and greater than f. 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. For an upward propagating inertio-gravity wave in the Northern Hemisphere, the perturbation wind vector turns anticyclonically with height.

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+{{Term
+|Display title=inertio-gravity wave
-{{TermHeader}}
+|Definitions={{Definition
-{{TermSearch}}
+|Num=1
+|Meaning=An [[internal gravity wave]] propagating under the influence of both [[buoyancy]]  and [[Coriolis forces]].
-<div class="termentry">
+|Explanation=The [[dispersion relation]] is given by [[frequency]] <blockquote>[[File:ams2001glos-Ie9.gif|link=|center|ams2001glos-Ie9]]</blockquote> in which ''N'' is the [[buoyancy frequency]], ''f'' is the [[Coriolis parameter]], and ''k''<sub>''h''</sub> and ''k''<sub>''v''</sub> are the  horizontal and vertical components, respectively, of the [[wavenumber]] vector '''k'''. For all wave-numbers, inertio-gravity waves have frequency smaller than ''N'' and greater than ''f''. Their [[group velocity|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. For an upward propagating  inertio-gravity wave in the Northern Hemisphere, the [[perturbation]] wind [[vector]] turns  anticyclonically with height.
-  <div class="term">
+}}
-== inertio-gravity wave ==
+}}
-  </div>
-<div class="definition"><div class="short_definition">An [[internal gravity wave]] propagating under the influence of both [[buoyancy]]  and [[Coriolis forces]].</div><br/> <div class="paragraph">The [[dispersion relation]] is given by [[frequency]] <div class="display-formula"><blockquote>[[File:ams2001glos-Ie9.gif|link=|center|ams2001glos-Ie9]]</blockquote></div> in which ''N'' is the [[buoyancy frequency]], ''f'' is the [[Coriolis parameter]], and ''k''<sub>''h''</sub> and ''k''<sub>''v''</sub> are the  horizontal and vertical components, respectively, of the [[wavenumber]] vector '''k'''. For all wave-numbers, inertio-gravity waves have frequency smaller than ''N'' and greater than ''f''. 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. For an upward propagating  inertio-gravity wave in the Northern Hemisphere, the [[perturbation]] wind [[vector]] turns  anticyclonically with height.</div><br/> </div>
-</div>
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-[[Category:Terms_I]]