Using robustness and preferred locations of archeomagnetic flux patches to constrain the physics of the core

Filipe Terra-Nova, LPGN Laboratoire de Planétologie et Géodynamique de Nantes, Nantes Cedex 03, France, Hagay Amit, CNRS, Paris Cedex 16, France, Gelvam A Hartmann, Instituto de Geociências, Universidade Estadual de Campinas, Campinas, Brazil and Ricardo I.F. Trindade, USP University of Sao Paulo, São Paulo, Brazil