drfarren t1_jdtnnjw wrote on March 27, 2023 at 2:33 AM

Reply to comment by CrustalTrudger in Around 550 million years ago the earth's magnetic field almost collapsed, but then strengthened a few million years later. Scientists say this may have been due to the formation of the inner core. But why exactly would that cause the magnetic field to get stronger? by somethingX

Does the non-spherical shape of the core and mantle layers play into this? Like, does the field become stronger in areas where the friction between layers force mantle material to flow differently.