Storm-induced changes of the topside ionosphere as deduced from incoherent-scatter radars. Master's thesis

Technical Report · Mon Jan 01 04:00:00 EST 1990

OSTI ID:5931923

Lunn, K J

Incoherent scatter radar observations from Millstone Hill, Saint Santin, and Arecibo are used to illustrate changes of the topside ionosphere during a geomagnetic storm. These observations consist of electron density, electron and ion temperatures, and ion velocity components parallel and perpendicular to the magnetic field. These parameters can further describe changes in ion composition, electric fields, and neutral winds. Attention is given to a specific storm during the Equinox Transition Study (ETS) of September 1984. In order to isolate the storm effects in the topside ionosphere, a comparison will be made between a disturbed and quiet day. A novel result from this study is the finding of correlated oscillations between parallel and perpendicular ion velocity components which are apparently storm induced. Previously, these oscillations have been observed primarily at night, but now it's noticed that during storm conditions there are prominent oscillations during the day.

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, OH (USA)
• OSTI ID: 5931923
• Report Number(s): AD-A-227899/2/XAB; AFIT/CI/CIA--90-106
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHARGED PARTICLES
CHEMICAL COMPOSITION
COMPARATIVE EVALUATIONS
EARTH ATMOSPHERE
ELECTRIC FIELDS
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GEOMAGNETIC FIELD
ION TEMPERATURE
IONIC COMPOSITION
IONOSPHERE
IONOSPHERIC EFFECTS
IONS
LEPTONS
MAGNETIC FIELDS
MAGNETIC STORMS
MEASURING INSTRUMENTS
ORIENTATION
PLANETARY IONOSPHERES
RADAR
RANGE FINDERS
SCATTERING
WIND