Geophysical Interpretation

Geoimage specialises in processing airborne (and ground) geophysical surveys of all vintages. We use quality software (including Intrepid, Geosoft, ERMapper, Geomatica, ArcGIS, and MapInfo), and our staff have extensive experience in handling the good and the not-so-good digital data.

After carrying out all the preprocessing of your geophysical data sets including gridding, levelling, filtering, and mosaicking, we can then provide you with a complete set of integrated datasets. We can take all your raster datasets, which may include magnetic intensity, RTP magnetics, vertical derivatives of the magnetics, the radiometric channels, gravity, satellite imagery, etc and produce composite images that show the spatial relationships between the parameters. These composite images can be output as ECW compressed images that can be viewed in MapInfo or ArcView where they can be further integrated with your geological and other vector information. Alternatively we can make hardcopies from the images.

Figure Above: Example of geophysical processing and mosaicing of multiple aeromagnetic surveys. Individual surveys were edited to correct obvious problems due to elevation errors, reflights, and noise spikes in the original data. Surveys were then microlevelled to a common base, and grid “stitched” at optimum cell size. This preserves high frequency information from surveys flown at closer line spacing. Data shown here is provided by the Northern Territory Geological Survey.