Time-Domain Modeling of Three-Dimensional Earth's and Planetary Electromagnetic Induction Effect in Ground and Satellite Observations
Abstract
Electric currents induced in conductive planetary interiors by time-varying magnetospheric and ionospheric current systems have a significant effect on electromagnetic (EM) field observations. Complete characterization of EM induction effects is difficult owing to non-linear interactions between the three-dimensional (3-D) electrical structure of a planet and spatial complexity of inducing current systems. We present a general framework for time-domain modeling of 3-D EM induction effects in heterogeneous conducting planets. Our approach does not assume that the magnetic field is potential, allows for an arbitrary distribution of electrical conductivity within a planet, and can deal with spatially complex time-varying current systems. The method is applicable to both data measured at stationary observation sites and satellite platforms, and enables the calculation of 3-D EM induction effects in near real-time settings.
Keywords
Cite
@article{arxiv.2009.01525,
title = {Time-Domain Modeling of Three-Dimensional Earth's and Planetary Electromagnetic Induction Effect in Ground and Satellite Observations},
author = {Alexander V. Grayver and Alexey V. Kuvshinov and Dieter Werthmüller},
journal= {arXiv preprint arXiv:2009.01525},
year = {2021}
}