1-Day TEM Method with Hands-on Exercises
3 December 2021 | 1pm - 5pm (UTC +7) | Online | Instructor : Mr Toke SØltoft, Aarhus GeoSoftware
Course Description
- The purpose of the course is to provide the participants with an insight into the ideas and theories behind processing and inversion of TEM data and in principle how the instruments work. The focus will be on ground-based data, collected for geological (mineral exploration), hydrological, and geotechnical purposes. We will demonstrate how processing and inversion of TEM data is carried out in practice. For this, we use the software packages SPIA and Aarhus Workbench.
- The course will include theory and data from normal ground based TEM instruments.
- Course participants will be given a free time limited license to work with data before or after the course. Hands-on exercises will be sent to participants along with license information before the course.
Course Objectives
- Basic theory of time-domain electromagnetics
- Basic function of a TEM instrument
- Data processing
- Data inversion- single soundings and spatial constrained inversions
- Smooth, layered and sharp model description
- Inversion optimization and construction of starting models
- Model evaluation - residuals and misfit
- Visualization of TEM inversion models in profiles, mean resistivity maps, 3D viewer and PDF report
Participant's Profile
- Geophysicists/geologists/engineers carrying out ground based TEM surveys
- Students/staff at academic institutions involved in research on the TEM method
Prerequisites
- Some basic knowledge of geophysical survey methods
Trainer
Mr Toke SØltoft
Director, Aarhus GeoSoftware, Denmark
I have an MSc in geophysics from Aarhus University (Denmark) and I am also an electronics engineer educated at Mercantec Technical College in Viborg (Denmark).I have worked at CSIRO, Perth (Australia) with airborne EM data, Engineers without borders as project manager on groundwater projects (Ghana), Avannaa in seismic field projects (Greenland), SkyTEM Surveys (Denmark) as field manager, and the HydroGeophysics Group from Geoscience, Aarhus University as geophysicist working with hardware development. Since 2015 I have been Director of Aarhus GeoSoftware (Denmark) which is a software company developing software for processing, inversion and visualization of electromagnetic and electrical imaging data. Our clients are worldwide and range from small private companies to geological surveys, universities, and research organisations.