The Transient Electromagnetic Method (TEM) is an advanced airborne geophysical technique that measures the decay of an induced secondary electromagnetic field. This measured decay rate is highly sensitive to variations in subsurface electrical resistivity.
Applications & Value
By mapping these resistivity changes, the TEM system provides critical data for:
- Geohazard Assessment: Identifying lithologies, soil characteristics, and thickness to map quick clay zones and subsurface weakness zones linked to landslides and rock instabilities.
- Resource & Environmental Studies: Supporting hydrogeological investigations, mineral exploration, and bedrock characterization.
Integration & Technology
The instrument is designed for seamless integration into NGU’s established airborne geophysical program, complementing existing magnetic and radiometric surveys. It will deliver state-of-the-art time-domain electromagnetic data, significantly enhancing the detail and depth of subsurface models.
User Community
This powerful tool will serve a wide range of stakeholders, including national and local authorities, research institutes, universities, counties, and municipalities, providing essential data for land-use planning, hazard mitigation, and scientific research.