Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sa51a04m&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SA51A-04
Physics
2431 Ionosphere/Magnetosphere Interactions (2736), 2435 Ionospheric Disturbances, 2437 Ionospheric Dynamics
Scientific paper
Recurrent, surge-like variations of the F layer with a ~ 12--min occurrence period have been observed by the incoherent scatter radars (ISR) at Millstone Hill and Kharkov during 0820-0920 UT, Sep 25, 1998. These perturbations are well correlated with magnetic disturbances from ground-based high and mid latitude magnetometers and energetic particles injections observed by geostationary satellites in different MLT sectors. The disturbances appear to be directly driven by the modulation of the IMF Bz and By with the same periodicity. As a result of the substorm onset at about 0820 UT,a preexisting polarization jet (SAID) penetrated as far as L ~ 2.5 according to the DMSP satellites electric field observations. Modulation of the electric field in the polarization jet region caused modulation of plasma parameters observed by the ISRs at mid and subauroral latitudes. It turns out also that perturbations comprise partly 10-to-15-min period AGW.
Foster Christopher J.
Mishin Evgeni V.
Rich Frederic J.
Taran V. I.
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