Mg在地球发电机中的作用Powering Earth’s dynamo with magnesium precipitation from the core
Joseph G. O’Rourke
& David J. Stevenson
Earth’s global magnetic field arises from vigorous convection within the liquid outer core. Palaeomagnetic evidence reveals that the geodynamo has operated for at least 3.4 billion years, which places constraints on Earth’s formation and evolution. Available power sources in standard models include compositional convection (driven by the solidifying inner core’s expulsion of light elements)