[SEM19-P09] Synthetic test for a 3-D global inversion of the electrical conductivity by using the Sq band
Keywords:Sq, electrical conductivity, inversion
In this study, we test the 3D global inversion by using the syntetic data with higher modes of the spatial distirbution. In a forward modeling part, an integral equation method is used, as the boundary conditions are already satisfied in synthtic Green's functions and thus numerical grids are not necessary in the air. In an inversion part, a quasi-Newton method and an adjoint approach are adapted to reduce a number of forward calculations.
In this presentation we show the synthtic results and discuss the possibility to elucidate the electrical conductivity structure in the mantle, especially, mantle transition zone and around by using the Sq field data.