Inner core crystallization as a power source for lunar dynamo

Presentation given as part of the conference: “Advances in lunar magnetism: from paleomagnetism to dynamos” in Cargese, France, June 1-3, 2016.

The main purpose of this presentation was to show how global mantle history controls magnetic field generation for the Moon, in particular the effect of KREEP enrichment on the nearside and the potential mantle overturn.

The effect of different light elements on dynamo generation was also presented.

Lunar dynamo

Example output for simulations with an increasing (from left to right) initial amount of sulfur (red) or carbon (green). For a given dynamo onset time, carbon alloys can sustain longer activity. This is due to the relative slow core growth with core cooling.