Internal atmospheric hydromagnetic planetary-gravity waves propagating through a latitudinally sheared zonal flow and a zonal magnetic field sheared both latitudinally and vertically are studied. It is shown that the waves possess four critical latitudes. At two of them the waves propagate on one s
Hydromagnetic-gravity wave critical levels in the solar atmosphere
β Scribed by O. Mekki; I. A. Eltayeb; J. F. McKenzie
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 253 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0038-0938
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β¦ Synopsis
It is shown that the discontinuous jump in the vertical wave energy flux of slow hydromagnetic-gravity waves, occurring at a critical level, which is accompanied by wave absorption, and the existence of a reflection point imply that slow waves are trapped in the solar atmosphere. Thus such a system behaves as a leaky wave guide.
π SIMILAR VOLUMES
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The small phase-lag between velocities observed at different chromospheric levels is interpreted as being due to acoustic waves reflected by the very hot atmospheric layers of the chromosphere-corona transition zone. We consider first an isothermal slab, then a realistic solar atmospheric model and