Airborne Geophysical Surveys Applied to Urban/Brownfield Investigations

A044 Z-99 AIRBORNE GEOPHYSICAL SURVEYS APPLIED TO URBAN/BROWNFIELD INVESTIGATIONS 1 Abstract A number of airborne geophysical surveys have now been conducted in the UK using a fixedwing system operated jointly by the British and Finnish Geological Surveys. The system provides magnetic radiometric and frequency domain electromagnetic survey measurements. Regulatory survey permissions force a variety of flight elevations typically between 54 to 244 m. On the fringes of major conurbations we encounter urban greenspace and brownfield areas. These areas may contain mixtures of infrastructure and built structures together with derelict and green areas. In order to provide valid interpretations of the