Figure 2: Global reconstructions of the geomagnetic field at times that span the Levantine spike event. | Nature Communications

Figure 2: Global reconstructions of the geomagnetic field at times that span the Levantine spike event.

From: Geomagnetic spikes on the core-mantle boundary

Figure 2

Maps of Br at the core–mantle boundary (CMB) predicted from model CALS10k.2 at (a) 2000 BC, (b) 1500 BC, (c) 1000 BC and (d) 750 BC. All scales for Br range from −900 to 900 μT. Note the incipient flux patch under Saudi Arabia at 1500 BC in b that grows into a relatively strong flux patch centred on 25° N in c. By 750 BC it appears to have moved west and north to merge with a patch lying to the south of the UK. There is no spike signature in the associated surface intensity (Fig. 4b), because of low resolution in the CALS10k.2 model.

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