High and low frequency large amplitude variations of plasma and magnetic field in the magnetosheath: Radial profile and some features

High and low frequency large amplitude variations of plasma and magnetic field in the magnetosheath: Radial profile and some features

Variations in magnetosheath parameters, such as the ion flux and the magnitude of the magnetic field, over a wide range of frequencies are much larger than the variations in the undisturbed solar wind. We present the results of a statistical investigation of magnetosheath variations using a large da...

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Veröffentlicht in:Advances in space research 2003-01, Vol.31 (5), p.1389-1394
Hauptverfasser: Shevyrev, N.N, Zastenker, G.N, Nozdrachev, M.N, Němeček, Z, Šafránková, J, Richardson, J.D
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container_end_page 1394
container_issue 5
container_start_page 1389
container_title Advances in space research
container_volume 31
creator Shevyrev, N.N
Zastenker, G.N
Nozdrachev, M.N
Němeček, Z
Šafránková, J
Richardson, J.D
description Variations in magnetosheath parameters, such as the ion flux and the magnitude of the magnetic field, over a wide range of frequencies are much larger than the variations in the undisturbed solar wind. We present the results of a statistical investigation of magnetosheath variations using a large database of high time resolution (ls) INTERBALL-1 measurements and 1 min resolution IMP 8 data. Radial profiles of the ion flux and the standard deviations of the ion flux on 1-minute intervals were obtained for dusk and dawn flanks of the magnetosheath. These profiles are similar on the dawn and dusk flanks of the magnetosheath and for high and low frequency variations. The amplitude of the high frequency variations depends on the angle between the bow shock normal and interplanetary magnetic field direction; variations are much larger behind quasi-parallel bow shocks.
doi_str_mv 10.1016/S0273-1177(03)00008-5
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title High and low frequency large amplitude variations of plasma and magnetic field in the magnetosheath: Radial profile and some features
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