Survey Principles

Good microgravity surveys are built upon precise and accurate measurements taken most commonly upon a grid pattern. The work is fastidious and must be controlled by strict quality assurance systems. Reliable datasets are then submitted to data reduction that strips out the gravity originating from other influences. Minute, subtle variations in gravity allow maps to be produced that indicate the presence of sub-surface voids, cavities, swallow holes or mine shafts.

We forward model each project before mobilising to site so that we can assess the magnitude and dimensions of the gravity anomalies we seek. This data is used to design the geometry of the data acquisition grid that will be used to sample gravity. When Geotechnology gathers a dataset, it will have been optimised for the survey purpose and the expected geology.