Electrical conductivity profile of the mantle

This repo provides radial electrical conductivity profiles that were obtained through a PDE-constrained non-linear optimization of magnetic field measurements from the CHAMP and Swarm satellites. These models were presented in this work (accepted manuscript can also be found in this repository)

Grayver, A. V., Munch, F. D., Kuvshinov, A. V., Khan, A., Sabaka, T. J., & Tøffner‐Clausen, L. (2017). Joint inversion of satellite‐detected tidal and magnetospheric signals constrains electrical conductivity and water content of the upper mantle and transition zone. Geophysical research letters, 44(12), 6074-6081. https://doi.org/10.1002/2017GL073446

Please reference this publication if you use the provided models in your work.

Radial conductivity profiles

This image was created by executing the plot_models.py script.

<img src="models.png" width="40%" height="35%">

Inversion progress

The animation below shows best model at each iteration of the optimization for the case of the joint inversion. Starting (gray -- constant profile of 0.2 S/m) and final (red) models are denoted by dashed lines.

<img src="inversion.gif" width="50%" height="50%">