Mathematics – Logic
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2051h&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 18, p. 2051-2054
Mathematics
Logic
9
Bubbles, High Altitude, Ion Density (Concentration), Magnetic Equator, Dmsp Satellites, Drift Rate, Geomagnetism, Gravitational Effects, Plasma Loss
Scientific paper
The ion drift meter on the polar orbiting Defense Meteorological Satellite Program (DMSP) F-10 spacecraft observed bubble-like features near the magnetic equator that have remarkably continuous transitions in ion concentration N(sub i) and drift velocity, where there is a high positive correlation between upward velocity and decreased N(sub i). This is in marked contrast to the virtually discontinuous transitions that are characteristics of most bubbles. We conclude that these new features were probably observed on the bottomside of the F-layer at DMSP altitudes (750-850 km), much higher than normally accepted values. These observations were made during Feb.- Mar.- Apr. of 1991, when N(sub i) exceeded 10(exp 6)/cu cm on nearly every equator crossing.
Hanson William B.
Urquhart Andrew L.
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