Remote-sensing observations of F-region ion drift velocities using Dynamics Explorer-2 Doppler measurements of the O[sup +]([sup 2]P) [lambda]732. 0 nm emission

Journal Article · Fri Jul 24 04:00:00 EDT 1992 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/92GL00627· OSTI ID:7012714

Carr, S S; Killeen, T L ^[1]; Coley, W R ^[2]

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1. Univ. of Michigan, Ann Arbor (United States)
2. Univ. of Texas, Richardson (United States)

Limb-scan observations of Doppler line profiles from the O[sup +]([sup 2]P) [lambda]732.0 nm emission at F-region altitudes, made with the Fabry-Perot interferometer (FPI) on the Dynamics Explorer-2 (DE-2) spacecraft, have been analyzed to provide measurements of the meridional component of the ion convection velocity along the instrument line-of-sight. The initial DE-2 results presented here demonstrate the first spaceborne use of the remote-sensing Doppler technique for measurements of ionospheric convection. The FPI meridional ion drift measurements have been compared with nearly simultaneous in-situ ion drift measurements from the Retarding Potential Analyzer (RPA) on DE 2. Once allowance is made for the temporal lag between the in-situ and remote measurements, the results from the two techniques are in good agreement. The results of a simulation study demonstrate that the spaceborne interferometric technique has future utility for 2-D imaging of the quasi-instantaneous ion convection pattern.

• OSTI ID: 7012714
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 19:14; ISSN GPRLAJ; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

661320* -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGED PARTICLES
CONVECTION
DATA ANALYSIS
DOPPLER EFFECT
EARTH ATMOSPHERE
EMISSION SPECTRA
ENERGY TRANSFER
EXPLORER SATELLITES
F REGION
FABRY-PEROT INTERFEROMETER
HEAT TRANSFER
INTERFEROMETERS
ION DRIFT
IONOSPHERE
IONS
MASS TRANSFER
MEASURING INSTRUMENTS
MEASURING METHODS
OXYGEN IONS
PLANETARY IONOSPHERES
REMOTE SENSING
SATELLITES
SPECTRA
VELOCITY