Accession Number:

AD0668213

Title:

ELECTRON CONTENT FLUCTUATIONS ASSOCIATED WITH A MAGNETIC STORM COMMENCING ON MAY 25, 1967.

Descriptive Note:

Memorandum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Report Date:

1968-03-01

Pagination or Media Count:

23.0

Abstract:

VHF transmissions 137.350 MHz from geostationary satellite ATS-1 1966 110A have been analyzed to determine the fluctuations in ionospheric electron content associated with magnetic storm No. 122 which began on May 25 0735 EST and ended on May 27 0100 EST. Coincident with the advent of extremely disturbed propagation conditions in the HF band was an estimated increase in the ionospheric electron content of approximately 100 percent which occurred over a period of 90 minutes. This apparent increase in electron content during the positive phase of this large magnetic storm may be real and if so is in general consistent with the results of others. However, due to ray path obliguity, the possible effects of severe horizontal gradients and electronic redistribution upon the Faraday rotation measurements may distort the results to some extent. Severe amplitude scintillation occurred following the measured content excursion and its index was about 100 percent until midmorning. Author

Subject Categories:

  • Geomagnetism
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE