[S18-1] Inner core structure and dynamics

[S18-1-05] Complex Iron Lattice Preferred Orientation Pattern at the Earth's Inner

^○Maurizio Mattesini^{1, 2}, Anatoly Belonoshko³, Hrvoje Tkalcic⁴ (1.Departamento de Fisica de la Tierra, Astronomia y Astrofisica I, Universidad Complutense de Madrid, Madrid, Spain, 2.Instituto de Geociencias (CSIC-UCM), Facultad de CC. Fisicas, Madrid, Spain, 3.Condensed Matter Theory, Department of Theoretical Physics, AlbaNova University Center, KTH Royal Institute of Technology, Stockholm, Sweden, 4.Research School of Earth Sciences, The Australian National University, Canberra, Australia.)

An entangled Lattice Preferred Orientation (LPO) pattern has been found at the Earth's inner core for different types of iron polymorphs. The amount of crystal alienation and its particular spatial distribution at ICB was achieved by merging the information from high-quality inner core probing seismic data [PKP(bc-df)] together with state-of-the-art ab initio calculations. Results are showing that the obtained LPO arrangement at ICB can be used as a key boundary condition for novel dynamo simulations, providing a further way to distinguish in between different geodynamical scenarios.