Determining propagation routes of Pc 3/4 pulsations to low latitudes with ground-based magnetometers.

Details Determining propagation routes of Pc 3/4 pulsations to low latitudes with ground-based magnetometers. Determining propagation routes of Pc 3/4 pulsations to low latitudes with ground-based magnetometers.

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm11a0792w&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM11A-0792

Physics

2407 Auroral Ionosphere (2704), 2724 Magnetopause, Cusp, And Boundary Layers, 2736 Magnetosphere/Ionosphere Interactions, 2772 Plasma Waves And Instabilities

Scientific paper

A number of Pc 3/4 pulsation events were identified during January, 2000. These events occurred only on the dayside magnetosphere and have frequencies consistent with previous IMF correlations. We have performed a comparison of the phase difference of Pc 3/4 pulsations with the MEASURE and MACCS magnetometer arrays, both of which employ GPS timing. The results suggest that most Pc 3/4 pulsations first arrive at low L values (L of ≈ 1.7). However, some cases appear to show no phase difference within the one second precision of the measurements. This study will focus on the ``ionospheric transistor'' model and the theory that magnetic upstream waves cross the magnetopause directly into the magnetosphere.

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