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Fig. 2 | Earth, Planets and Space

Fig. 2

From: Geomagnetic and ionospheric response to the interplanetary shock on January 24, 2012

Fig. 2

A map with selected magnetometers (triangles), riometers (asterisks), and GIC stations (boxes) in Scandinavia used for the study of the SC event on January 24, 2012 (upper panel). Movement of the GPS pierce points (intersections with the ionosphere at 300 km of raypaths between GPS satellite and ground receiver) during the period 1500–1530 UT is shown by a line between two asterisks. Bottom panel the same as in the upper panel, but for Canada. Dark dots denote the geomagnetic projections of the THEMIS and GOES satellites

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