Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/18444
Title: The ionospheric response during an interval of Pc5 ULF wave activity
Authors: Lester, M.
Davies, J. A.
Yeoman, T. K.
First Published: 1-Feb-2000
Publisher: SPRINGER VERLAG
Citation: ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES, 2000, 18 (2), pp. 257-261
Abstract: A preliminary analysis of Pc5, ULF wave activity observed with the IMAGE magnetometer array and the EISCAT UHF radar in the post midnight sector indicates that such waves can be caused by the modulation of the ionospheric conductivity as well as the wave electric field. An observed Pc5 pulsation is divided into three separate intervals based upon the EISCAT data. In the first and third, the Pc5 waves are observed only in the measured electron density between 90 and 112 km and maxima in the electron density at these altitudes are attributed to pulsed precipitation of electrons with energies up to 40 keV which result in the height integrated Hall conductivity being pulsed between 10 and 50 S. In the second interval, the Pc5 wave is observed in the F-region ion temperature, electron density and electron temperature but not in the D and E region electron densities. The analysis suggests that the wave during this interval is a coupled Alfven and compressional mode.
DOI Link: 10.1007/s00585-000-0257-x
ISSN: 0992-7689
Links: http://hdl.handle.net/2381/18444
http://www.ann-geophys.net/18/257/2000/angeo-18-257-2000.html
Type: Journal Article
Rights: Copyright © European Geosciences Union 2000
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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