Physics
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977georl...4..369m&link_type=abstract
Geophysical Research Letters, vol. 4, Sept. 1977, p. 369-372.
Physics
Amps (Satellite Payload), Earth Magnetosphere, Ionospheric Composition, Satellite Observation, Explorer Satellites, International Magnetospheric Study, Isis Satellites, Plasma Diagnostics
Scientific paper
On January 19, 1972, in situ measurements by Explorer 45, orbiting in the magnetosphere near the equatorial plane, and ISIS 2, in a circular polar orbit at 1400 km, simultaneously detected patches of enhanced ionization outside the main body of the plasmasphere. The magnetospheric plasma region extended between (geomagnetic latitude) L values 3.4-4.8 and the ionospheric electron density enhancement extended between L values 3.6-4.4. The two plasma features were detected near 22 hours magnetic local time (MLT). Based on a number of observations, it is inferred that the plasma density enhancement persisted for more than 5 hours and extended over at least 2 hours in MLT near L = 5. These results provide experimental evidence that some detached magnetospheric plasma regions are signatures of a flux tube containing enhanced ionization throughout a volume extending from the topside ionosphere out to the equator.
Grebowsky Joseph M.
Miller Nathan J.
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