Mapping the environmental and geological properties of the near surface.
High-resolution airborne geophysical surveys provide a rapid, cost-effective and non-invasive means of studying natural and artificial conditions of the near surface.
They deliver key data for: monitoring and protecting the environment; developing environmental strategies and remediation plans; managing the sustainable development of land and natural resources; and targeting site investigations.
The British Geological Survey (BGS) and the Geological Survey of Finland (GTK) have joined forces to operate a Joint Airborne-geo- science Capability (JAC). This arrangement shares the costs of ownership and R&D and provides both partners with a state-of-the-art airborne geophysics capability for their national survey programmes.
The aircraft is a de Havilland Twin Otter that has proved to be reliable and safe for low-level survey work. The '3-in-1' equipment package, based on a system originally developed by GTK, comprises full-spectrum radiometric, four-frequency electro-magnetic (EM) and magnetic gradiometer systems. The EM system is unique in providing a multifrequency 'frequency domain' system on a fixed-wing aircraft that enables data to be collected cost-effectively over large areas.