Fig. 3
From: Geomagnetic and ionospheric response to the interplanetary shock on January 24, 2012
The magnetograms (X-component in 104 nT) of the latitudinal profile of stations TALO, RANK, FCHU, GILL, ISLL, PINA, and THRF from the CARISMA array during the time period 1440–1540 UT. Geomagnetic latitudes are indicated near the station codes. Gray line shows variations of riometric absorption at RANK. The PI and MI impulses are denoted with empty and filled triangles, respectfully