On the longitudinal variations of the ionospheric electric field during magnetospheric disturbances

Details On the longitudinal variations of the ionospheric electric field during magnetospheric disturbances On the longitudinal variations of the ionospheric electric field during magnetospheric disturbances

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.9135g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Nov. 1, 1983, p. 9135-9144.

Other

101

Electric Fields, Ionospheric Currents, Ionospheric Disturbances, Latitude, Magnetospheric Instability, Plasmasphere, Auroral Zones, Equatorial Atmosphere, Magnetic Disturbances, Midlatitude Atmosphere

Scientific paper

A joint alert campaign was organized during the month of October 1980 by the incoherent scatter radars in the American sector: nmaely, Jicamarca, Arecibo, Millstone Hill, and Chatanika. The campaign, which met with success, was designed to study the behavior of the ionospheric electric field as a function of latitude during magnetically active conditions. The Arecibo data in this campaign support present and previous observations at Jicamarca that suggest that when the convection E field suddenly decreases, the Alfven layer shielding field becomes unbalanced and penetrates the plasmasphere. While this type of observation is reasonably convincing, others are more difficult to categorize. It is suggested that, beside the high-latitude electric fields, time-varying auroral conductivity models will have to be considered in order to understand the morphology of the low-latitude E field disturbances. The first correlation analysis and determination of the amplitude ratio of the disturbed zonal electric field at 30 deg geometric latitude (Arecibo) to the field at 0 deg (Jicamarca) are presented.

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