That the earth has an iron-rich liquid core, sufficient energy to drive convection and a Coriolis force to twist the convecting fluid are primary reasons why the geodynamo has sustained itself for billions of years.
That the earth has an iron-rich liquid core, sufficient energy to drive convection and a Coriolis force to twist the convecting fluid are primary reasons why the geodynamo has sustained itself for billions of years.
地球拥有富含铁的液态核心、有足够的能量驱动对流，并具有科氏力可使对流的流体扭转，这些是地球发电机之所以能自我维持数十亿年的主要原因。