Last week, we outlined the basics of Air-FTG®. Here is why it is applicable to ZeroGeo’s geothermal exploration.

To put it simply, you literally see more with gravity gradiometry than you can with standard (or scalar) gravity data. The resolution is 10 times higher than traditional airborne gravimetry*.

Its multiple independent data sets deliver geothermal exploration teams with a more reliable interpretation of data than would be feasible from a scalar ground gravity survey. It also detects the edges of geological features better, allowing us to gain a precise understanding of geological boundaries such as faults before we drill.

This ultimately means we can make a more informed decision about where to drill and start producing clean geothermal energy more quickly.

*"The Bell gravity gradiometers are capable of producing data appropriate for exploration geophysics with accuracies of better than 1 Eö and resolutions of tens of metres (C. Murphy 2003, private communication). Fine resolution enables excellent lateral definition of the edges of stratigraphic or structural units of different densities, or the imaging of vertical or subvertical structures and fault planes. FTG resolution is high at the shallow section making it ideal for near surface and seabed mapping. In contrast, traditional airborne gravimetry has produced data with accuracies of about 3 mGal, resolved to wavelengths of 20 km or shorter at an altitude of 0.6 km. Detailed ground gravimetry can provide gravity gradient information with a noise level of about 10 Eö. This performance is at a resolution and precision more suitable for large-scale regional studies."

Air-FTG and geothermal exploration

Air-FTG flight pattern

Introducing Full Tensor Gravity surveying for geothermal energy exploration