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Detailed Reference Information |
Bame, S.J., Anderson, R.C., Asbridge, J.R., Baker, D.N., Feldman, W.C., Gosling, J.T., Hones, E.W., McComas, D.J. and Zwickl, R.D. (1983). Plasma regimes in the deep geomagnetic tail: ISEE 3. Geophysical Research Letters 10: doi: 10.1029/GL010i009p00912. issn: 0094-8276. |
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Using a lunar gravitation-assisted orbit, the ISEE-3 spacecraft remained close to and within a previously unexplored part of the distant (60--220 RE) geomagnetic tail nearly continuously from 1 January to 30 March 1983. An initial analysis of data obtained with the Los Alamos plasma electron analyzer onboard ISEE-3 reveals that all of the plasma regimes identified previously with near-earth measurements (i.e., plasma sheet, low-latitude boundary layer, plasma mantle, lobe, and magnetosheath) remain recognizable entities in the distant tail as well. However, these regimes apper to be intermingled in a more chaotic fashion than near the earth. Typical flow velocities within the plasma sheet at ~200 RE in this preliminary analysis are ~500 km s-1 tailward, considerably higher than is characteristic of the near-earth plasma sheet. Earthward flow within the plasma sheet has been observed occasionally, suggesting the temporary presence of a neutral line beyond 220 RE. Strong bi-directional electron anisotropies are found throughout much of the distant plasma sheet, boundary layer, and magnetosheath. |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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