Transient composite electric field disturbances near dip equator associated with auroral substorms

Details Transient composite electric field disturbances near dip equator associated with auroral substorms Transient composite electric field disturbances near dip equator associated with auroral substorms

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1451s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 14, July 24, 1992, p. 1451-1454. Research supported by ISRO.

Physics

9

Auroral Electrojets, Earth Magnetosphere, Electric Fields, Magnetic Equator, Polar Substorms, F Region, Ionospheric Drift

Scientific paper

Ionosonde data of Kodaikanal and Huancayo are used to show the simultaneous occurrence of a transient composite electric field disturbance in the night and day hemispheres near the dip equator in close association with an event of isolated auroral substorm activity. The polarity pattern of the electric field disturbance is consistent with the global convection model predicting westward (eastward) electric fields at night (by day) near the geomagnetic equator in response to an increase in polar cap potential drop, and fields of opposite signs for a decrease in polar cap potential.

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