Fig. 6: Comparison of normal and reversed flux patches of three specific intervals of the Holocene.

Tracking of normal (NFP) and reverse (RFP) flux patches at the core-mantle boundary for model CALS10k.23. The location of NFP (yellow) and RFP (purple) for time intervals #1 (a), 50-2150 BP), #2 (b), 3000-5100 BP), #3 (c), 6500–8600 BP). d Longitudinal evolution of NFP (yellow circles) and RFP (purple circles); dashed lines indicate the azimuth of the positive peak of shear wave velocity in the mantle68, rectangle shades correspond to interval #1 (light grey), #2 (light purple), #3 (light red) e latitudinal evolution of NFP (yellow circles) and RFP (purple circles); dashed lines indicate the expected latitude of the tangent cylinder in the Northern and Southern hemispheres. The size of purple and yellow circles is proportional to the intensity of the flux patch. The Dona Benedita record was acquired during the second interval. Map generated using python package Cartopy77.