Accession Number:

AD0722435

Title:

High Latitude Sporadic E.

Descriptive Note:

Environmental research papers,

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Report Date:

1971-02-05

Pagination or Media Count:

66.0

Abstract:

Previous research results on high latitude sporadic E are surveyed, and replotted and displayed in Corrected Geomagnetic Latitude CGL AND Corrected Geomagnetic Time CGT and related to current research results. Patterns of occurrence of sporadic E are developed, showing percent of time of occurrence in location in the CGLCGT coordinate system, in terms of sporadic E top frequency fE sub s and magnetic activity level. Patterns of E sub s occurrence are related to concepts of the auroral oval, polar cap, and substorms. Sporadic E with top frequency or MHz is related to substorms. This sporadic E occurs in the late evening-early night sector of the CGLCGT coordinate system. Implications of sporadic E on high latitude HF propagation during solar cycle maximum and minimum are discussed. Author

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE