Event Title

Auroral Zone Precipitation Patterns

Presenter Information

Kent L. Ackerson, University of Iowa

Location

Yosemite National Park

Start Date

2-8-1974 12:15 PM

End Date

2-8-1974 12:45 PM

Description

An array of sensitive electro- static analyzers, or LEPEDEA's, on the low-altitude polar-orbiting satellite INJUN 5 have yielded a large body of observations of auroral zone precipitation patterns for protons and electrons in the energy range 50 < E < 15000 eV. During relatively quiet times the charged particle intensities equatorward of the trapping boundary for electrons E > 40 kev are similar to intensities observed with similar instrumentation in the plasma sheet at large radial distances. Poleward of the trapping boundary the primary energy influx is associated with 'inverted V' electron precipitation events.

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Feb 8th, 12:15 PM Feb 8th, 12:45 PM

Auroral Zone Precipitation Patterns

Yosemite National Park

An array of sensitive electro- static analyzers, or LEPEDEA's, on the low-altitude polar-orbiting satellite INJUN 5 have yielded a large body of observations of auroral zone precipitation patterns for protons and electrons in the energy range 50 < E < 15000 eV. During relatively quiet times the charged particle intensities equatorward of the trapping boundary for electrons E > 40 kev are similar to intensities observed with similar instrumentation in the plasma sheet at large radial distances. Poleward of the trapping boundary the primary energy influx is associated with 'inverted V' electron precipitation events.