Fig. 5: Paleointensity and angular variation comparison of obtained data and geomagnetic field models. | Nature Communications

Fig. 5: Paleointensity and angular variation comparison of obtained data and geomagnetic field models.

From: Stalagmite paleomagnetic record of a quiet mid-to-late Holocene field activity in central South America

Fig. 5

Geomagnetic field variations in central Brazil. a Relative paleointensity data for stalagmite DBE50 (black dots) and cubic spline fit for 75 years knots (black curve). Models: CALS10k.2 (light blue curve), HFM.OL1.A1 (green curve), pfm9k.1a (gold curve), BIGMUDI4k.1 (light pink curve), SHA.DIF.14k (dark green curve). Results from ALHO6 (Pau D’Alho cave)29; relocated to the Dona Benedita cave coordinates are shown as red dots. Absolute intensity and respective errors (bars) from South America were obtained from Geomagia v3.450 derived from Bolivia (green)51, Ecuador (blue)51,52, Peru (pink)53,54,55,56,57 and Uruguay (brown)58. b Angular variation within a 150 yr window for directions from the Dona Benedita stalagmite (black dots) and Pau d’Alho cave stalagmite (red dots) showing the contrasting behavior before and after the geomagnetic dipole decay18 and the likely onset of SAA in South America29 (yellow shade).

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