Geophysical Survey Company – TerraDat (UK) Ltd

Geophysics Services and Applications for Construction & Geotechnical Projects

Engineering geophysics plays a crucial role in the construction and geotechnical industries, providing essential insights through advanced geophysical surveys. At TerraDat, we specialise in a wide range of geophysical applications designed to support engineering projects. Our state-of-the-art techniques deliver accurate subsurface data, ensuring safety and efficiency in construction and geotechnical projects. Our geophysical surveys are integral to informed decision-making and successful project outcomes, from assessing ground conditions to detecting hidden hazards.

example of a team undertaking a seismic refraction survey

Specialist Seismic Refraction Survey Company

TerraDat is a specialist Seismic refraction survey company with many years of experience applying and researching its use in shallow engineering and geotechnical work. Seismic survey methods provide a useful tool for investigating geological structure and rock properties. The technique

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Seismic Reflection survey undertaken on a beach

Seismic Reflection

TerraDat has specialist experience in designing and implementing high-resolution seismic reflection surveys for onshore and shallow marine environments. The company routinely carries out seismic survey work for geotechnical and environmental applications as well as larger-scale work for oil/mineral exploration.  

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TerraDat has innovated established geophysical survey techniques (resistivity tomography & seismic refraction) specifically for river and stream crossing investigations

River Crossings: Profiling Geology using Geophysics

Many of our clients constructing roads, laying pipelines or investigating historic bridges find profiling the geology beneath rivers tricky using conventional ground investigation methods. Since the path rivers take is often dictated by changes in geology, the problem can be

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Peat trench ready as part of a peat mapping survey using ground radar to provide high-resolution images of the deposit beneath discrete profiles or with a resistivity survey

Peat Mapping using Geophysics (Peat Surveys)

Mapping peat is a common requirement for proposed developments such as wind farms and pipeline routes where they cross remote and/or sensitive areas. There are several geophysical methods that can provide plan and cross-sectional information to map the distribution of

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MASW - Surface Wave Surveys

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

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Survey image

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

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Mapping Geology along Pipeline Routes

Geophysics for Mapping Geology along Pipeline Routes

Pipelines and cable routes present a set of unique developmental and geotechnical challenges. TerraDat has designed an integrated survey approach, providing data useful to all stages of the project design. Archaeological assessments and UXO detection: Due to the large distances

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Microgravity survey

Experts in Microgravity Surveys

A TerraDat microgravity survey is based on measuring localised variations in the Earth’s gravitational field using an extremely sensitive gravity meter. We own and operate the latest Scintrex gravimeters. A microgravity survey targets physical contrasts between materials of contrasting density.

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Ground-Penetrating-Radar

Experienced Ground Radar (GPR) Company

TerraDat has been a GPR survey company since the technique evolved to a level where it could be applied to a wide range of applications over 20 years ago. Because the GPR method involves analysis of wave-form data, our experience

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Electrical Resistivity survey

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

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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

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Survey productivity is maximised by using the latest Sensys magnetometers, particularly the Magneto MX magnetic gradiometry system. This system utilises eight Sensys gradiometer probes mounted on a bespoke carriage system.

Archaeological Geophysics (Archeology)

CHECK OUT OUR NEW DEDICATED ARCHAEOLOGICAL GEOPHYSICS WEBSITE TerraDat’s archaeological geophysics team is uniquely placed to draw on decades of experience in applied geophysics and archaeological surveying. TerraDat’s approach uses our fully-trained geophysicists to deal with the geophysics while our

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