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How the effects of winds and electric fields in F2-layer storms vary with latitude and longitude - A theoretical studyThe effects of thermospheric winds and electric fields on the ionospheric F2-layer are controlled by the geometry of the magnetic field, and so vary with latitude and longitude. A simple model of the daytime F2-layer is adopted and the effects at midlatitudes (25-65 deg geographic) of three processes that accompany geomagnetic storms: (1) thermospheric changes due to auroral heating; (2) equatorward winds that tend to cancel the quiet-day poleward winds; and (3) the penetration of magnetospheric electric fields are studied. At +/- 65 deg, the effects of heating and electric fields are strongest in the longitudes toward which the geomagnetic dipole is tilted, i.e., the North American and the South Indian Ocean sectors. Because of the proximity of the geomagnetic equator to the East Asian and South American sectors, the reverse is true at +/- 25 deg.
Document ID
19920059137
Document Type
Reprint (Version printed in journal)
Authors
Mendillo, M. (NASA Marshall Space Flight Center Huntsville, AL, United States)
He, X.-Q. (Boston University MA, United States)
Rishbeth, H. (Southampton, University United Kingdom)
Date Acquired
August 15, 2013
Publication Date
May 1, 1992
Publication Information
Publication: Planetary and Space Science
Volume: 40
Issue: 5 Ma
ISSN: 0032-0633
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: SERC-GR/E/73956
CONTRACT_GRANT: NAS8-36324
Distribution Limits
Public
Copyright
Other