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| Titel |
Density representation of Long's equation |
| VerfasserIn |
M. Humi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 14, no. 3 ; Nr. 14, no. 3 (2007-06-11), S.273-283 |
| Datensatznummer |
250012200
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| Publikation (Nr.) |
 copernicus.org/npg-14-273-2007.pdf |
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| Zusammenfassung |
| Long's equation describes two dimensional stratified atmospheric
flow over terrain. Its solutions using regular first order perturbations
and linear approximation were investigated analytically and numerically
by many authors. Special attention was paid to the properties of the
gravity waves that have been predicted to be generated as a result. In
this paper we derive a new representation of this equation in terms of
the atmospheric density. This new equation is used then to study the steady
state that results from some ideal upstream density profiles and the
generation of gravity waves. Furthermore we compare the new formulation
with the stream function formulation of Long equation and develop new
criteria for the stability of the flow. |
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