1994 Volume 46 Issue 11 Pages 925-935
In order to clarify the correlation of high- and low-latitude Pi 2 magnetic pulsations, we have analyzed 1-s magnetic data from the Chokurdakh (Φ =64.75°, L = 5.50), Magadan (Φ= 53.70°, L =2.85), and Moshiri (Φ = 37.76°, L = 1.60) stations along the 210° magnetic meridian. The H-component Pi 2 amplitudes are of almost the same order in the plasmasphere. In the outside region of the plasmapause the H-component amplitudes become roughly 1 order larger than those of in the plasmasphere. The D-component amplitudes, on the other hand, increase exponentially from lower to higher latitudes. At L = 1.60-2.85 the H- and D-component Pi 2 amplitudes show in-phase relation. Between L = 2.85 and 5.50, the Hcomponents have a roughly out-of-phase relation, while the D components show an unclear relation. These observations suggest that Pi 2 pulsations consist of several different modes in the structured magnetosphere.
