The interaction of a magnetic cloud with the Earth: Ionospheric convection in the Northern and Southern Hemispheres for a wide range of quasi-steady interplanetary magnetic field conditions

Journal Article · Sat May 01 04:00:00 EDT 1993 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/92JA02350· OSTI ID:6426853

Freeman, M P ^[1]; Farrugia, C J; Burlaga, L F; Lepping, R P ^[2]; Hairston, M R ^[3]; Greenspan, M E ^[4]; Ruohoniemi, J M ^[5]

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1. Imperial College, London (United Kingdom)
2. NASA Goddard Space Flight Center, Greenbelt, MD (United States)
3. Univ. of Texas, Richardson (United States)
4. Boston Univ., MA (United States)
5. Johns Hopkins Univ., Laurel, MD (United States)

This is the second of three papers which study a large interplanetary magnetic cloud, and its interaction with the earth's magnetosphere. Here the authors study flows within the ionosphere during the passage of the magnetic cloud on Jan 13-15, 1988. This is the first study of ionospheric convections during prolonged periods of stable and different IMF orientations, which result from the stable, but spatially varying field structure within the magnetic cloud. Data from IMP-8 and DMSP-F8 are analyzed for this work. This observation gave information on ionospheric responses to greater than 10 hour period of northward and southward IMF, with a gradual change from one to the other. Issues studied included strengths of peak flows for north and south IMF; changes in cross polar cap potential with IMF B[sub z]; types and variations of convective patterns vs IMF; variations in size of the polar cap; etc.

• OSTI ID: 6426853
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 98:A5; ISSN JGREA2; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

661320* -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONVECTION
COUPLING
CRYOSPHERE
CURRENTS
EARTH ATMOSPHERE
EARTH MAGNETOSPHERE
EARTH PLANET
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ENERGY TRANSFER
HEAT TRANSFER
INTERPLANETARY MAGNETIC FIELDS
IONOSPHERE
MAGNETIC FIELDS
MASS TRANSFER
NORTHERN HEMISPHERE
PLANETARY IONOSPHERES
PLANETS
POLAR REGIONS
SOUTHERN HEMISPHERE