An effect of the Rayleigh number on morphology of a long-lived lunar dynamo driven by compositional convection

Fumi Hyodo1, Futoshi Takahashi1, Satoshi Kaneshima1, Hisayoshi Shimizu2 and Hideo Tsunakawa3, (1)Kyushu University, Fukuoka, Japan, (2)Univ Tokyo, Tokyo, Japan, (3)Tokyo Inst. Tech., Tokyo, Japan