A study of the undisturbed mid-latitude ionosphere using simultaneous multiple site ionosonde measurements during the Sundial-86 campaign
- Univ. of Western Ontario, London (Canada)
- Utah State Univ., Logan (USA)
- Ionospheric Prediction Services, Radio and Space Services, Darlinghurst (Australia)
The Sundial-86 campaign obtained simultaneous ionosonde measurements of N{sub m}F2 from 41 mid-latitude sites geographically dispersed around the world from September 21 to October 5, 1986. A three-dimensional, time-dependent model of Earth's ionoshpere has been used to fit the variations in N{sub m}F2 obtained from these sites. The model successfully reproduced the measurements in both the northern and southern hemispheres using the vertical plasma drift as a free parameter. During geomagnetically quiet conditions this drift is primarily due to the meridional neutral wind. The vertical plasma drift required to fit the data is consistent from location to location and the deduced meridional neutral wind is also consistent with previous neutral wind measurements and models. However, it is shown that a lack of knowledge of the variation of the O{sup +} flux at the top of the atmosphere introduces a large uncertainty in the deduced thermospheric winds.
- OSTI ID:
- 5377515
- Journal Information:
- Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 95:A6; ISSN JGREA; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGED PARTICLES
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
EARTH PLANET
ELECTRONIC EQUIPMENT
EQUIPMENT
F REGION
F2 LAYER
IONOSONDES
IONOSPHERE
IONS
MATHEMATICAL MODELS
NORTHERN HEMISPHERE
OXYGEN IONS
PLANETARY IONOSPHERES
PLANETS
PLASMA DRIFT
RADIO EQUIPMENT
SOUTHERN HEMISPHERE
THERMOSPHERE
THREE-DIMENSIONAL CALCULATIONS
TIME DEPENDENCE
WIND