Accession Number:

AD0781178

Title:

Ionospheric Heating Analysis

Descriptive Note:

Final technical rept.

Corporate Author:

RICE UNIV HOUSTON TX

Report Date:

1974-04-01

Pagination or Media Count:

107.0

Abstract:

Enhancements of various features of the incoherent scatter spectrum are observed when the ionosphere is illuminated with powerful, high-frequency radio waves. The radio waves excite plasma instabilities producing lines or more complex spectral features near the local plasma frequency, at the local ion-acoustic frequency, near the local gyrofrequency and twice the gyrofrequency. The enhancements occur in a thin slab as observed by the incoherent scatter radar and at both upshifted and downshifted frequencies with respect to the probing radar frequency. The enhancements are observed to vary with time when the high frequency transmitter that produces the radio wave excitation is held at constant power, and to vary with time as the high frequency transmitter is turned on or off.

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE