Fig. 2.From: The CHAOS-3 geomagnetic field model and candidates for the 11th generation IGRFPower spectra of the first (circles) and second time derivatives (asterisks) for epoch 2005 (solid lines), and 2010 (dashed lines) computed from the four models CHAOS-2s (red), “extended CHAOS-2s” (magenta), CHAOS-3α (green) and CHAOS-3 (blue).Back to article page