The Geophysical Survey Specialists
Our team of geoscientists have been delivering honest, reliable and objective subsurface geophysical mapping services for over 30 years.
How can we help you?
Why Terradat Geophysics?
We know complex geophysical surveys, but we keep things down to earth. With over 30 years of expertise, TerraDat is your trusted partner in engineering, environmental, energy, and archaeological ground investigations.
At TerraDat, we understand the importance of reliable geophysical surveys for making informed decisions. Our experienced team of geophysicists use advanced technology to provide precise insights into subsurface conditions, ensuring your project’s success. We tailor each survey to deliver the specific data you need, always focusing on practical outcomes.
Some of our Customers
Crosshole Seismics
Seismic methods can provide detailed information about rock properties and geological structure between boreholes. Fewer boreholes are needed to achieve a continuous picture of the subsurface, thereby reducing overall costs and the risk of missing target features. Borehole seismic methods … Read More
Brownfield Site Investigation using Geophysics
Most former industrial sites have a legacy of buried structural hazards and contamination. Geophysical surveys can detect buried targets without the need to excavate. Many industrial contaminants, such as salinisation by acids and hydrocarbon plumes, can leave a significant geophysical … Read More
Ground Conductivity (EM)
A ground conductivity or electromagnetic (EM) survey involves the generation of an EM field at the surface and subsequent measuring of the response as it propagates through the subsurface. The main components of the instrument are a transmitter coil (to … Read More
TerraDat reveals ‘Port Talbot’s Pompeii’ at Margam Park
TerraDat was privileged to conduct the geophysical survey at Margam Country Park that revealed a substantial Roman villa While much of our work involves commercial geophysical surveys for infrastructure and engineering developments, it was wonderful to collaborate closely with archaeologists … Read More
Magnetics
The magnetic survey technique is based on mapping localised variations in the Earth’s magnetic field caused by sub-surface magnetic materials, which range from naturally occurring magnetic minerals to man-made ferrous objects. This leads to a wide range of applications, from … Read More
Electrical Earthing: Advanced Soil Resistivity Measurements for Electrical Earthing Design
As part of our services for energy and infrastructure, TerraDat regularly carries out soil resistivity measurements for earthing installation design and corrosion engineering. These resistivity measurements are made by passing a DC electrical current through the ground using a pair … Read More
An interview with TerraDat co-founder Nick Russill
In this interview with Alan Wick, originally broadcast on his radio show, you will hear from TerraDat co-founder Nick Russill about: How to continue to grow your business by innovating and staying agile Why it’s important to sometimes say ‘No’ … Read More
MASW (Surface Wave Surveys)
Multi-channel Analysis of Surface Waves (MASW) is a very useful method for investigating shallow geological structure and, in particular, the relative shear strength of subsurface materials. By incorporating density values for the local bedrock and overburden sediments it is possible … Read More
Electrical Resistivity Tomography (ERT)
The Resistivity technique is useful for characterising the sub-surface materials in terms of their electrical properties. Variations in electrical resistivity (or conductivity) typically correlate with variations in lithology, water saturation, fluid conductivity, porosity and permeability, which may be used to … Read More