LATITUDINAL AND DIURNAL VARIATIONS OF THE IONOSPHERIC ELECTRON CONTENT NEAR THE AURORAL ZONE IN WINTER.

Abstract

The analysis of three month's observations of Faraday rotation observed on S-66 transmissions made at Kiruna Geophysical Observatory (67.8 degrees N, 20.3 degrees E) is presented. The ionospheric electron content along the subionospheric path of the satellite was computed for almost 400 transits. Also effective slab thicknesses were calculated using critical frequency values from 6 Scandinavian stations, covering an interval of 10 degrees of latitude. Latitudinal and diurnal variations of the ionospheric electron content and the effective thickness were studied. The most striking feature of the latitudinal variation of the total electron content was a distinct minimum at the southern boundary of the auroral zone during winter night-time. This minimum coincides with the 'trough' observed by topside sounding satellites. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 07, 1965
Accession Number
AD0632264

Entities

People

  • Ludwik Liszka

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Boundaries
  • Coverings
  • Diurnal Variations
  • Electrons
  • Frequency
  • Grids
  • Intervals
  • Latitude
  • Observation
  • Observatories
  • Rotation
  • Thickness

Fields of Study

  • Environmental science

Readers

  • Astronomy and Astrophysics.
  • Atmospheric Science/Meteorology

Technology Areas

  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster