Electrical Resistivity Imaging in Geophysical Surveys
Summary
Electrical resistivity imaging is a non-invasive method that maps variations in subsurface electrical properties by injecting low-frequency currents into the ground and measuring resultant potential differences. These measurements are inverted to yield two- or three-dimensional models of subsurface resistivity, which correlate with lithology, fluid content, porosity and fracture networks. Advances in multichannel acquisition and rapid inversion algorithms have led to high-resolution surveys in applications ranging from groundwater exploration and geothermal system characterisation to civil engineering and environmental monitoring. Time-lapse studies reveal dynamic changes in moisture and temperature, while joint inversion with complementary methods such as induced polarisation or seismic refraction improves discrimination of complex targets. The deployment of flexible electrode configurations, robust regularisation schemes and open-source modelling frameworks has enhanced interpretative accuracy and quantitative uncertainty analysis. Globally, electrical resistivity imaging supports sustainable resource management, hazard assessment and infrastructure stability by delivering detailed, cost-effective subsurface images in diverse geological settings.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Electrical Resistivity Imaging in Geophysical Surveys publication trend
The graph below shows the total number of articles in electrical resistivity imaging in geophysical surveys across all publications each year (not limited to Nature Index journals).
Technical terms
Electrical Resistivity Tomography (ERT): A method that images subsurface resistivity by injecting current and measuring voltage differences across multiple electrodes.
Apparent Resistivity: The resistivity value computed from field measurements before inversion, representing an averaged property of the current paths.
Inversion: The computational process of transforming measured data into a model of subsurface resistivity using mathematical optimisation and regularisation.
Time-Lapse Imaging: Repeat ERT surveys conducted over time to monitor temporal changes in subsurface conditions such as moisture content or temperature.
Induced Polarisation (IP): A complementary technique measuring charge-storage effects in the subsurface, enhancing discrimination of clay, mineralisation or pore-fluid properties.
Model Resolution Matrix: A quantitative indicator of the ability of an inversion to recover true subsurface features, guiding survey design and electrode configuration choices.
References
- Use of electrical resistivity tomography measurements for investigation of different grouting materials for very shallow geothermal applications within varying seasonal conditions; Applied on a geothermal earth-air heat exchanger system. Renewable Energy (2024).
- Determination of rock mass integrity coefficient using a non-invasive geophysical approach. Journal of Rock Mechanics and Geotechnical Engineering (2023).
- pyGIMLi: An open-source library for modelling and inversion in geophysics. Computers & Geosciences (2017).
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.