Fig. 3From: Non-monotonic growth and motion of the South Atlantic AnomalyGeomagnetic field intensity at Earth’s surface for the mean model of COV-OBS.x1 at four snapshots (Gillet et al. 2015). Dashed green contours denote the S0 area, dashed purple contours denote the S1 area. Green diamonds denote the Min center, green and purple circles denote the centers of mass CM0 and CM1, respectively. Note the different scales from top to bottomBack to article page