Physics
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.3983l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A3, p. 3983-3990.
Physics
15
Dynamic Pressure, International Magnetospheric Study, Solar Terrestrial Interactions, Solar Wind, Geomagnetic Latitude, Geomagnetism, Interplanetary Magnetic Fields
Scientific paper
The observations obtained during the International Magnetospheric Study (IMS) from the magnetometers of the IGS network extending from Cambridge, England, to Tromso, Norway, are used to study the response of subauroral current systems to sudden changes in solar wind dynamic pressure. Observations show that the response is very strong at subauroral latitudes. The preliminary response in the H component is a brief, small increase in the dayside morning sector and a decrease in the aftenoon and night sectors. The main response in the horizontal field (the H and D components) is toward the pole except in the dayside morning sector. The inferred ionospheric current is mainly a circulatory system flowing counterclockwise when viewed from the north pole everywhere at subauroral latitudes except the dayside morning sector.
Ginskey M.
Le Guan
Petrinec Steven M.
Russell Christopher T.
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