ملخص
The stability of a magnetic-velocity shear layer, of thickness L, to hydromagnetic-gravity waves of zonal wavenumber k is investigated analytically, within the Boussinesq approximation, in the situation where ∊(= kL) is small. It is found that, in addition to the unstable modes of the corresponding sheet, new modes of instability of growth rate of order ∊2 are also present provided one critical level exists within the layer. The existence of one critical level also effects over-reflexion of stable modes. Furthermore it is shown that a magnetic shear acting alone can lead to instability as well as effecting over-reflexion of stable modes.
اللغة الأصلية | English |
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الصفحات (من إلى) | 1-18 |
عدد الصفحات | 18 |
دورية | Journal of Fluid Mechanics |
مستوى الصوت | 105 |
المعرِّفات الرقمية للأشياء | |
حالة النشر | Published - أبريل 1981 |
منشور خارجيًا | نعم |
ASJC Scopus subject areas
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- ???subjectarea.asjc.2200.2211???
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