Accession Number:

AD0705540

Title:

POSITIVE ION COMPOSITION MEASUREMENTS IN THE LOWER IONOSPHERE DURING THE 12 NOVEMBER 1966 SOLAR ECLIPSE

Descriptive Note:

Physical sciences research papers

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Report Date:

1970-04-01

Pagination or Media Count:

15.0

Abstract:

Positive ion composition measurements in the D and E regions were performed on three rocket flights during the 1966 solar eclipse program conducted at Cassino, Brazil. The E region results showed that, at totality, NO and O2 decreased in density while the ratio NOO2 increased. Long-lived meteoric ions appeared to be unaffected during the short period of the eclipse. A submerged layer of meteoric ions became prominent at totality when the molecular ion densities were smallest and produced a sporadic E layer. The D region results indicated that the decay in the water cluster ions at totality was probably less than a factor of four in the vicinity of 80 km. This work represents part of a continuing Air Force program to study lower ionospheric processes which affect communications.

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE