Valve effect of inhomogeneities on anisotropic wave propagation
- 20 March 1973
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of Fluid Mechanics
- Vol. 58 (01) , 27-37
- https://doi.org/10.1017/s0022112073002107
Abstract
A recent investigation of hydromagnetic waves in a rotating fluid has revealed certain ‘valve’-like critical levels associated with each wave which can be effectively penetrated from one side only. This effect is illustrated in the present paper by means of two further examples, namely (a) the propagation of hydromagnetio-gravity waves in a non-uniform magnetic field, and (b) the propagation of internal gravity waves in a wind which, though unidirectional, is both horizontally and vertically sheared.Keywords
This publication has 21 references indexed in Scilit:
- The critical level for hydromagnetic waves in a rotating fluidJournal of Fluid Mechanics, 1972
- On resistive instabilitiesPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1972
- Hydromagnetic oscillations of the Earth's coreReviews of Geophysics, 1972
- On the hydromagnetic stability of a rotating fluid annulusJournal of Fluid Mechanics, 1972
- A non-linear investigation of critical levels for internal atmospheric gravity wavesJournal of Fluid Mechanics, 1971
- Momentum transport by gravity wavesQuarterly Journal of the Royal Meteorological Society, 1969
- Reflexion and stability of waves in stably stratified fluids with shear flow: a numerical studyJournal of Fluid Mechanics, 1968
- The critical layer for internal gravity waves in a shear flowJournal of Fluid Mechanics, 1967
- The propagation of groups of internal gravity waves in a shear flowQuarterly Journal of the Royal Meteorological Society, 1966
- Group VelocityIMA Journal of Applied Mathematics, 1965