Thin current sheets in the deep geomagnetic tail

Details Thin current sheets in the deep geomagnetic tail Thin current sheets in the deep geomagnetic tail

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.2427p&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 22, p. 2427-2430

Physics

Geophysics

20

Current Sheets, Electron Plasma, Geomagnetic Tail, Magnetic Field Configurations, Magnetic Storms, Electron Energy, Geophysics, International Sun Earth Explorer 3, Temperature Effects

Scientific paper

The International Sun-Earth Explorer 3 (ISEE-3) magnetic field and plasma electron data from Jan - March 1983 have been searched to study thin current sheets in the deep tail region. 33 events were selected where the spacecraft crossed through the current sheet from lobe to lobe within 15 minutes. The average thickness of the observed current sheets was 2.45 R(sub E), and in 24 cases the current sheet was thinner than 3.0 R(sub E); 6 very thin current sheets (thickness lambda less than 0.5 R(sub E) were found. The electron data show that the very thin current sheets are associated with considerable temperature anisotropy. On average, the electron gradient current was about 17% of the total current, whereas the current arising from the electron temperature anisotropy varied between 8-45% of the total current determined from the lobe field magnitude.

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