Accession Number : ADA140509

Title :   A High Frequency Radio Technique for Measuring Plasma Drifts in the Ionosphere.

Descriptive Note : Technical rept.,

Corporate Author : LOWELL UNIV MA CENTER FOR ATMOSPHERIC RESEARCH

Personal Author(s) : Dozois,C G

PDF Url : ADA140509

Report Date : Jul 1983

Pagination or Media Count : 260

Abstract : A technique is developed for investigating the dynamics of the auroral ionosphere through the interpretation of high-frequency radio-wave observations made at Goose Bay, Labrador. Spectral analysis of ionospheric reflections received at four spaced antennas identifies each echo by its Doppler shift, making it possible to locate several simultaneous reflection points with a limited antenna array. The radial velocity components of the reflection areas are determined from the Doppler shifts, and a resultant plasma-drift velocity is calculated from these components. The analysis technique is first tested with computer-simulated drift data; then calculations using Goose Bay data from night observations of the F region verify the technique by showing a westerly drift in late evening, shifting to an easterly drift around midnight, in agreement with F-region drift measurements made by other observational techniques.

Descriptors :   *IONOSPHERE, *PLASMAS(PHYSICS), DRIFT, MEASUREMENT, ATMOSPHERIC SOUNDING, HIGH FREQUENCY, IONOSONDES, DIGITAL SYSTEMS, SKY, MAPPING, COMPUTER PROGRAMS, THESES

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE