10.4. Comprehensive Workflows: ZTEM
Author: Devin C. Cowan
Published: March, 2020
Here, we present a general workflow for loading, interpreting and inverting Z-axis Tipper electromagnetic (ZTEM) data. We begin with ZTEM data in xyz data format. Our goal is to invert the data to recover a 3D conductivity model. You may work with the tutorial dataset provided or your own data:
The data used for this tutorial were collected at Dufferin Lake as part of a uranium exploration project. The data are public domain. They were downloaded from the Saskatchewan Mineral Assessment Database . The original data have been down-sampled to make the size of data files more manageable.
Tutorial Sections
- 10.4.1. - Understanding ZTEM anomalies
- 10.4.2. - Loading geophysical data and transforming from along-line cross-line convention to GIF convention
- 10.4.3. - Standard assignment of uncertainties to ZTEM data
- 10.4.4. - Preparing data for inversion within the GIFtools framework
- 10.4.5. - Mesh design
- 10.4.6. - Setting appropriate parameters and running the inversion
- 10.4.7. - Examining convergence, data misfit and the recovered model