Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents - Current systems associated with local auroral break-ups

Details Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents - Current systems associated with local auroral break-ups Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents - Current systems associated with local auroral break-ups

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981p%26ss...29..431b&link_type=abstract

Planetary and Space Science, vol. 29, Apr. 1981, p. 431-435, 437-447. Research supported by the Deutsche Forschungsgemeinschaft

Physics

185

Atmospheric Electricity, Auroras, Electric Fields, Geomagnetism, Ionospheric Currents, Magnetic Storms, Electron Precipitation, Field Aligned Currents, Magnetohydrodynamic Flow, Magnetometers, Space Plasmas

Scientific paper

Three consecutive auroral break-ups observed over Scandinavia in 1977 are discussed. It is pointed out that each of the break-ups was preceded by a clear fading of the aurora and magnetic fields and that each occurred slightly south of the Harang discontinuity in the region of north-westward-directed electric fields. They were associated with an abrupt change in direction of the electric field from north-west to south-west and the appearance of a westward equivalent current in the localized active region. It is found that these observations matched the features to be expected during the generation of a Cowling channel by a strong increase of the ionospheric conductivities due to precipitating auroral electrons. Numerical model calculations, based on the observations during the initial brightening and peak development of the second, most conspicuous break-up, reveal that the field-aligned currents at the northern and southern border of the active region are indeed very weak.

Affiliated with

Also associated with

No associations

Rating

Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents - Current systems associated with local auroral break-ups does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents - Current systems associated with local auroral break-ups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Joint two-dimensional observations of ground magnetic and ionospheric electric fields associated with auroral zone currents - Current systems associated with local auroral break-ups will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-783787