Ralph-Uwe Börner

TL;DR: A new 3-D vector finite element code is presented and its strength is demonstrated by modelling a realistic marine CSEM scenario which shows that seafloor topography gives an important response which needs to be reproduced by numerical modelling to avoid the misinterpretation of measurements.

TL;DR: This review of recent developments in the discrete solution of the 3-D induction problem in the time and frequency domains reviews advantages and disadvantages of the common numerical techniques for solving partial differential equations such as the Finite Difference and Finite Element methods.

TL;DR: In this article, the authors present an efficient numerical method for the simulation of transient electromagnetic fields resulting from magnetic and electric dipole sources in three dimensions, based on the Fourier synthesis of frequency domain solutions at a sufficient number of discrete frequencies obtained using a finite element (FE) approximation of the damped vector wave equation obtained after Fourier transforming Maxwell's equations in time.

TL;DR: In this paper, an adaptive unstructured triangular grid finite element approach is presented for simulating plane-wave diffusive electromagnetic fields in 2-D conductivity structures, where mesh refinement strategies using an a posteriori error estimator yield most efficient numerical solutions.

TL;DR: It is shown how rational Krylov subspace methods may be used to solve the same problem in the frequency domain followed by a synthesis of the transient solution using the fast Hankel transform, arguing that the pure time-domain is more efficient.