Part of work package 3 for SIGMA + was to establish a test site and characterise with existing technologies.
Contour map of the test site
A site was established on the University of Birmingham campus, outside the Civil Engineering building. A multi-utilities tunnel is known to be present under the area, representing a void approximately 2m by 2m in cross section, and between 1-2m below the ground surface.
A set of control points have been established to allow for repeat measurements later with a QT (or any other) gravimeter. These were also used to acquire a full topographical model of the site.
The site has been characterised for geophysical responses using the following technologies: Ground Penetrating Radar (GPR), electromagnetic location (EML) and frequency domain electromagnetic (FDEM) ground conductivity mapping and conventional micro-gravity.
PAS128 compliant utilities survey of the test site
The Scintrex CG5 on the test site.
The site has been characterised for geophysical responses using the following technologies: Ground Penetrating Radar (GPR), electromagnetic location (EML) and frequency domain electromagnetic (FDEM) ground conductivity mapping and conventional micro-gravity.
Electromagnetic Conductivity map of the test site
Gravity Data corrected with the Terrain Correction