Fig. 2.

The permanent IMAGE magnetometer stations (open circles) and the temporary stations (solid black) that formed the BEAR network in June–July 1998. Only the continental stations below 72° North are used in this study.
The permanent IMAGE magnetometer stations (open circles) and the temporary stations (solid black) that formed the BEAR network in June–July 1998. Only the continental stations below 72° North are used in this study.