DMSP optical and electron measurements in the vicinity of polar cap arcs

Details DMSP optical and electron measurements in the vicinity of polar cap arcs DMSP optical and electron measurements in the vicinity of polar cap arcs

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2413h&link_type=abstract

Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2413-2430.

Physics

78

Auroral Arcs, Electron Precipitation, Polar Caps, Electron Distribution, Flux (Rate), Geomagnetism, Imagery, Interplanetary Magnetic Fields, Satellite Instruments

Scientific paper

Attention is given to observations from the USAF DMSP and S3-2 satellites dealing with the detailed phenomenology of polar cap arcs and the geophysical context in which they occur. Simultaneous optical and electron flux measurements were taken during 12 passes of two DMSP satellites between 0400 and 2300 UT on December 12, 1977. This day was marked by alternating periods of weak substorm activity in the auroral oval and discrete arcs in the polar cap. Aspects of instrumentation and data presentation are considered along with geomagnetic and interplanetary magnetic field (IMF) conditions, DMSP visual imagery, and electron observations. A description is provided of the various electron populations found at high magnetic latitudes during a period of polar cap arc activity.

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