Accession Number : AD0726541

Title :   Polar Ionosphere: Measured Ion Density Enhancements and Soft Electron Precipitation,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Morse,Frederick A. ; Hilton,Henry H. ; Mizera,Paul F.

Report Date : 15 JUN 1971

Pagination or Media Count : 42

Abstract : The experiment complement aboard a polar satellite having a perigee near 160 km and initial apogee near 1800 km included an ion trap and sensors for low energy electrons and protons. The data from these two experiments have been correlated for the period August 13-18, 1968, during which time the perigee invariant latitude was > or = 70 degrees. Results of these studies for the polar region are the large ion density enhancements observed are correlated with simultaneously observed enhancements in the precipitating fluxes of low energy electrons. The trough and ionospheric enhancements are shown to occur below as well as above the F-Region maximum density height. It is concluded that the position of the midlatitude trough minimum should not be expected to show a simple relationship with magnetic indices since the shape depends on; the local precipitation (ionization) patterns; the total energy input, its time and spatial extent; diffusion rates of the ionized species; universal time; altitude of the observation. (Author)

Descriptors :   (*IONOSPHERE, POLAR REGIONS), IONIZATION, IONS, PROTONS, MEASUREMENT, SCIENTIFIC SATELLITES, MAGNETIC STORMS, ELECTRON DENSITY

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE