Further determination of the characteristics of magnetospheric plasma vortices with Isee 1 and 2

Details Further determination of the characteristics of magnetospheric plasma vortices with Isee 1 and 2 Further determination of the characteristics of magnetospheric plasma vortices with Isee 1 and 2

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86..814h&link_type=abstract

Journal of Geophysical Research, vol. 86, Feb. 1, 1981, p. 814-820. Bundesministerium für Forschung und Technologie

Physics

88

Magnetohydrodynamic Flow, Magnetospheric Instability, Plasma Layers, Vortices, Arctic Regions, Geomagnetism, International Sun Earth Explorer 1, International Sun Earth Explorer 2

Scientific paper

Further studies of the vortices in magnetospheric plasma flow with the Los Alamos Scientific Laboratory/Max-Planck-Institut (LASL/MPI) fast plasma experiment on Isee 1 and 2 have revealed that the pattern of vortical flow has a wavelength of approximately 20-40 earth radii and moves tailward through the magnetosphere at speeds of several hundred kilometers per second. The tendency toward vorticity pervades the total breadth of the plasma sheet tailward of the dawn-dusk meridian. The sense of rotation of the plasma flow (as viewed from above the ecliptic plane) is clockwise in the morning side of the plasma sheet and counterclockwise in the evening side. The sense of rotation in the morning and evening boundary layers is reversed from that in the contiguous regions of the plasma sheet. The occurrence of vortical flow is independent of the level of geomagnetic activity but is associated with long-period geomagnetic pulsations.

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