DI42A-07
The LPO Iron Pattern beneath the Earth’s Inner Core Boundary
Thursday, 17 December 2015: 11:50
303 (Moscone South)
Maurizio Mattesini1,2, Hrvoje Tkalcic3, Anatoly B Belonoshko4, Elisa Buforn1 and Agustin Udias1, (1)Complutense University of Madrid, Madrid, Spain, (2)Instituto de Geociencias (UCM-CSIC), Facultad de Ciencias Físicas, Plaza de Ciencias 1, Madrid, Spain, (3)Australian National University, Canberra, ACT, Australia, (4)KTH Royal Institute of Technology, Stockholm, Sweden
Abstract:
An Earth’s inner core surface pattern for the iron Lattice Preferred Orientation (LPO) has been addressed for various iron crystal polymorphs. The geographical distribution of the amount of crystal alienation was achieved by bridging high-quality inner core probing seismic data [PKP(bc-df)] together with ab initio computed elastic constants. We show that the proposed topographic crystal alignment may be used as a boundary condition for dynamo simulations, providing an additional way to discriminate in between different and, often controversial, geodynamical scenarios.
