Noun
geodynamo (plural geodynamos)
the mechanism responsible for the generation of the Earth's magnetic field caused by convection and conduction currents in the fluid core
As a result, no internal geodynamo is available to drive a magnetic field. Source: Internet
It originates in the fluid motions of the Earth's outer core (see geodynamo ). Source: Internet
The outer core is liquid, and the motion of this highly conductive fluid generates the Earth's field (see geodynamo ). Source: Internet