Magnetic Raynolds number range to sustain dipolar magnetic field in geodynamo simulations with different inner core sizes

Hiroaki Matsui1, Yuki Nishida2, Masaki Matsushima3, Atsushi Kumamoto2 and Yuto Katoh2, (1)University of California Davis, Davis, CA, United States, (2)Tohoku University, Department of Geophysics, Graduate School of Science, Sendai, Japan, (3)Tokyo Tech, Tokyo, Japan