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Wave mechanism of the magnetospheric convection

机译：磁层对流的波动机制

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The problem of momentum transfer from the solar wind to the geotail via magnetosonic waves has been solved. The structure of the wave field of monochromatic MHD oscillations is calculated in a cylindrical model of the geotail with a background plasma distribution typical of the geotail lobes. Fast magnetosonic waves entering the magnetosphere from the magnetosheath excite slow magnetosonic waves at the resonance magnetic shells inside the geotail. Resonant oscillations interact with the background plasma transferring their momentum to it. The problem of modifying the ion distribution function of the background plasma for a given spectrum of magnetosonic oscillations in the magnetosheath has been solved in the quasilinear approximation. It is shown that, in the process, ions in the geotail lobes acquire an average Earthward velocity. The region of the most effective transfer of the momentum is near the magnetopause, in the area of open field lines, housing resonance shells for slow magnetosonic oscillations of a broad range of frequencies and wave numbers. The wave transfer mechanism for the momentum is capable of generating an Earthward flow of magnetospheric convection during prolonged periods of the Northern IMF component.
机译：解决了通过磁声波将动量从太阳风传递到地尾的问题。单色MHD振荡的波场结构是在地尾的圆柱模型中计算的，该模型具有典型的地尾波瓣背景等离子体分布。从磁层进入磁层的快速磁声波在地尾内部的共振磁壳处激发了慢速磁声波。共振振荡与背景等离子体相互作用，将其动量传递给它。在拟线性近似中，解决了针对给定的磁石震荡中给定的磁声振荡谱修改背景等离子体的离子分布函数的问题。结果表明，在此过程中，地尾叶中的离子获得了平均向地速度。动量最有效的传递区域是在电磁场附近，在开放磁场线附近，装有共振壳，可在各种频率和波数范围内缓慢磁声振荡。动量的波传递机制能够在北IMF分量的长时间内产生磁层对流向地球的流动。

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