The heavy lines show PACE Corrected Geomagnetic Latitude. Stations are ordered with Resolute at the top, then the northern tier of stations from east to west, followed by the southern tier. This day illustrates typical substorm activity on the nightside and the long period pulsations typical of the high latitude dayside and cusp regions. The TCV at 1620 UT exceeds 100 nT at only three stations near the middle of the array, CD, CH, and RB, showing that it is quite localized. A magnetic field spectrogram showing power in the 0-100 mHz band at PG, CD and GH, over a 15 hour interval.
Local noon is indicated by a white triangle at the top of each panel.
However, at each site the waves are most intense near local noon. At least six separate bursts of Pc 1-2 emissions occur during this 90 minute period, several with sharply falling tones. These bursts are associated with the TCVs and long period pulsations seen in Figure 2. This document was last modified on 04 January 2001.