ELECTRON DENSITIES OF 8–100 ELECTRONS CM−3 DEDUCED FROM ALOUETTE II HIGH-LATITUDE IONOGRAMS
Author:
- E. L. HaggEHE. L. Hagg
- 1 January 1967
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 45 (1) , 27-36
Abstract
Alouette II topside ionograms recorded at high latitudes (L ≈ 6 or greater) and high altitudes (1 500–3 000 km) show an interference pattern between the electron gyro and the electron hybrid resonance spikes, when the electron density at the satellite is very low.This interference pattern can be used to determine the electron number density at the satellite, to an accuracy of better than 10% when the electron density is less than about 100 electrons cm−3. Preliminary results show that electron densities less than 30 electrons cm−3 occur over the region north of about 60 °N. geomagnetic latitude and that the southern boundary of the region where the very low electron densities are observed shifts south by about 8° between noon and midnight.Keywords
This publication has 3 references indexed in Scilit:
- F-layer ionization troughs deduced from Alouette dataJournal of Geophysical Research, 1965
- Ion composition and temperatures at 1000 km as deduced from simultaneous observations of a VLF plasma resonance and topside sounding data from the Alouette 1 satelliteJournal of Geophysical Research, 1965
- Plasma resonances in the upper ionosphereJournal of Geophysical Research, 1963