Gravity gradiometry is a geophysical technique used to measure the spatial variations in the gravitational field of the Earth. At Metatek, we utilise gravity gradiometry in the majority of our projects.
Unlike standard gravimetry, which measures the strength of the gravitational field at a single point, gravity gradiometry measures the rate of change of gravitational acceleration. We do this by using a selection of highly sensitive instruments known as gravity gradiometers.
If you have an application which you think may require gravity gradiometry, contact our team today
At Metatek, we work in various areas, gathering data through gravity gradiometry. Some of the main uses are:
Mineral and hydrocarbon exploration – Gravity gradiometry can be used to detect underground structures like salt domes, faults, or dense ore bodies. This can give information on where to drill for further exploration.
Geological mapping – To understand subsurface geological features, especially in inaccessible areas (e.g. under the ocean or dense vegetation). For these types of applications, we conduct our surveys using our specialised aircraft; we can measure large areas of land in a very short period of time.
Defence and security: In some cases, gravity gradiometry is employed for detecting underground bunkers or tunnels.
Gravity gradiometry is often used because it provides higher-resolution and more detailed information about the subsurface than conventional gravity measurements.
Key advantages of gravity gradiometry include:
Sensitivity to small-scale structures: Gravity gradiometry can detect subtle geological features that standard gravimetry might miss.
Improved noise rejection: Changes in gravity due to external factors (like aircraft motion) are more easily filtered out.
At Metatek, as well as gathering the data from our gravity gradiometry surveys, we also undertake rapid processing and detailed interpretation of the acquired data which enables the following:
In summary, gravity gradiometry is a precise and advanced method for probing the unseen subsurface of the Earth, offering valuable insights for exploration, science, and security. At Metatek, we specialise in gravity gradiometry. We work with organisations worldwide to provide accurate and up-to-date data and information.
For more details or to discuss your project, contact our team
