“…1.2) based on four columns: potential methods (gravity/geomagnetics) [84,93,[104][105][106][107][108]201], seismic exploration [83,90,134], transport processes [182,[214][215][216], and stress field [13,14]. 6 1 Introduction For an overview on the different columns of the model, see [15] and [17,94] (in German). For further information on the mathematical background, see, e.g., [81,82,85,86,88,91,97] and the references therein.…”