One of the methods had been proposed by Bokelmann und Wüstefeld (2009). The principle is based on the Radon-Transformation that had been published by Johann Radon in1917 (http://de.wikipedia.org/wiki/Johann_Radonde.wikipedia.org/wiki/Johann_Radon).
Bokelmann, G.H.R., Wüstefeld, A., 2009, Comparing crustal and mantle fabric from the North American craton using magnetics and seismic anisotropy, EPSL, doi: 10.1016/j.epsl.2008.10.032
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Visit of Prof. João Willy Rosa (Universidade de Brasil) at the IMG
31.10.2014