GP23A-1279
Correlation Based Geomagnetic Field Modeling

Tuesday, 15 December 2015
Poster Hall (Moscone South)
Stefan Mauerberger1, Matthias Holschneider1, Vincent Lesur2 and Julien Baerenzung1, (1)University of Potsdam, Potsdam, Germany, (2)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Abstract:
We present a new method for determining geomagnetic field models. It is based on the construction of an a priori correlation structure derived from our knowledge about characteristic length scales and sources of the geomagnetic field. The magnetic field measurements are then seen as correlated random variables too and the inversion process amounts to compute the a posteriori correlation structure using Bayes theorem. We show how this technique allows the statistical separation of the various field contributions and the assessment of their uncertainties.