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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: Effect of a huge crustal conductivity anomaly on the H-component of geomagnetic variations recorded in central South America

Fig. 1

Map of South American geomagnetic stations and the influence of the EEJ at different times and the SAMA at 2015. Sites and geomagnetic coordinates in blue are from the 1994 experiment, whereas sites and geomagnetic coordinates in red are from the 2015 experiment. The solid lines show the dip equator in both experiments, and dashed lines represent ±10° dip angles. The 23,000 nT isoline outlines the SAMA in 2015. Site CB (Cuiabá) is nearly the same in both experiments. Location of the permanent geomagnetic observatories (KOU, HUA, VSS and TRW) and of the proposed new geomagnetic observatory (PN) is also indicated

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