Geophysical Inversions with SimPEG

Lindsey Heagy

This tutorial was given as a part of the Software Underground, Transform 2020 event. We provide a hand-on overview of using SimPEG to simulate and invert geophysical data. The examples we plan to work through use Direct Current (DC) Resistivity and Induced Polarization (IP) data from the in Australia.

The Century Deposit was an early example of the potential for the utility of DC / IP in mineral exploration. The data we use were originally inverted in 1992 with codes developed by the UBC Geophysical Inversion Facility. At the time, the state-of-the-art inversion took approximately 1 day to run.

  • Can we reproduce results from over 20 years ago?
  • (in seconds rather than a day??)
References
  1. Mutton, A. J. (2000). The application of geophysics during evaluation of the Century zinc deposit. GEOPHYSICS, 65(6), 1946–1960. 10.1190/1.1444878