Day-time Pi pulsations at equatorial latitudes

Details Day-time Pi pulsations at equatorial latitudes Day-time Pi pulsations at equatorial latitudes

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jatp...45..733s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 45, Nov. 1983, p. 733-741.

Physics

24

Daytime, Equatorial Atmosphere, Geomagnetic Micropulsations, Magnetic Storms, Magnetic Signatures, Night

Scientific paper

The low latitude Pi2 pulsations, which are considered the best indicators of magnetospheric substorm onset and which have in the past been thought to be primarily nocturnal phenomena, are noted by the present study, which has used both pulsation records and 'Common Scale Magnetograms' from the Auroral Electrojet stations, to be occasionally diurnal at equatorial latitudes in simultaneity with the onset of magnetospheric substorms located in the night hemisphere. It is also found that the diurnal occurrences, unlike the nocturnal Pi2S, show enhancement in their H(x) component amplitudes at the dip equator, by contrast to the behavior at stations well away from it.

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