A microgravity survey was conducted for detecting the sink-holes at site of a power plant.
Pits, man-made tunnels and canals were considered as topographical effects and were corrected. To show the capability of the method two sites in a power plant have been surveyed for existing areas which can be affected by sink-holes overnight.
Ground shakes due to the running facilities were also preventing us from taking a calm measurement.
Despite all unwanted factors at site, we could delineate the sink holes quite accurately. The depth of and the shape of these anomalies have been modeled by 3-D inversion of micro-gravity data.