Convenor: Klaus Spitzer (Germany)
Co-Convenor: Valeriya Zadorozhnaya  (South Africa)

This symposium focuses on the methodological aspects of geoelectromagnetic forward and inverse modeling. Forward modeling still plays an important role for understanding the behavior of electromagnetic fields in complex geological environments and serves as a tool for designing survey configurations. There is still a huge demand in memory- and time-efficient modeling codes ranging from finite difference/finite volume/finite element techniques to integral equation codes. Quantifying uncertainties is a thriving field of interest. New approaches of model reduction or low-rank approximation of matrices, mapping large matrices on well-designed low-dimensional subspaces is of major concern. Moreover, solving the inverse problem is generally still challenging but, in particular, once we approach modern large-scale field surveys. Off-shore, on-land and airborne surveys provide a vast number of data to be handled by inversion algorithms. On top, anisotropy, surface and sea bottom topography, complex geometries, large parameter contrasts, discretization, parametrization, and parallelization play an increasingly important role in this exciting and fascinating field of research. Classical and alternative inversion concepts, global optimization schemes, regularization strategies, resolution analysis, model appraisal, sensitivity studies, and, again, uncertainty represent current areas of research.

We invite methodological, theoretical, numerical, or computational contributions in all areas of electric and electromagnetic methods.