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Fig. 2 | Earth, Planets and Space

Fig. 2

From: Dependence of the high-latitude plasma irregularities on the auroral activity indices: a case study of 17 March 2015 geomagnetic storm

Fig. 2

Comparison of the ROTI maps with the OVATION model results for selected UT moments of 16 March 2015 (the quiet day). Each panel (ad) presents the example of 15 min ROTI maps in geographic coordinates (30–90° N), the same ROTI map in CGM (50–90° MLAT) and the OVATION map for this UT moment in geomagnetic coordinates (50–90° MLAT) with the noon at the top. The Swarm satellites (A or B) orbital tracks and leveled plasma density Ne values (thick line) are superimposed on the geographical ROTI maps; time (UT) and satellite name are indicated close to the track line. Black dot indicate the position of the magnetic pole in CGM. Bottom panel (e) shows the daily ROTI map for 16 March. The Feldstein model results of the auroral oval (dashed line) are superimposed on the map

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