A transient auroral event on the dayside

Details A transient auroral event on the dayside A transient auroral event on the dayside

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9415291h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Nov. 1, 1989, p. 15291-15305. Research supported by the Rumudvalget.

Physics

60

Auroral Zones, Earth Magnetosphere, Field Aligned Currents, Hall Effect, Magnetometers, Polar Regions, Greenland, Magnetic Disturbances, Perturbation Theory

Scientific paper

A strong perturbation lasting about 10 min, beginning at 0930 UT on December 5, 1986, was recorded by high-latitude magnetometer stations in Greenland, Iqaluit, and the South Pole. Viking and Polar Bear satellite observations of the perturbation and observations of similar perturbations on the afternoon side in Svalbard, Heiss Island, and northern Siberia are also reported. It is suggested that the likely source of the perturbation is a magnetic disturbance in the solar wind observed by ISEE 1/2 and IMP 8. The perturbation is interpreted as an impulsive penetration of solar wind plasma on an interplanetary magnetic flux tube occurring through the magnetopause, ending in the low latitude boundary layer.

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