A GeoModel, Inc. survey crew can cover large areas in a day depending on the terrain and vegetation cover.Ground penetrating radar is operated above the ground surface, and produces a cross-sectional image of the ground, as shown below.
Recent internments (1 to 50 years old) produce very distinct grave anomalies in the GPR profile and are most easily detected. Older graves (50 to 100 years old or more) produce less distinct or minimal anomalies and are more difficult to detect. In cases where a vault or casket does not exist, or where the casket has completely deteriorated, GeoModel, Inc. A 400-MHz antenna can examine the subsurface to depths of up to 8 feet in sandy soils, but less deep in clayey soils as shown in the profile above. Ground penetrating radar surveys for locating graves can be conducted by one person, hand-towing the antenna. The pictures below show some of the equipment used in a survey and the results that can be obtained. Locations of both marked and unmarked graves, the center axis and length, were marked on the ground with orange paint by GeoModel, Inc. The soils at this site were very sandy and the caskets produced distinct anomalies. The GPR image shows the condition of the graves, from distinct (more recent internments) to collasped or deteriorated graves (older internments). This in-office cemetery mapping service is provided at additional cost to field marking of graves. ![]() In some cases, there is no headstone associated with the grave. This process requires very close field spacing of GPR survey lines and computer processing using special 3-D software. The 3-D modeling works best in sandy soils and is at extra cost to a field marking survey or a 2-D AutoCAD mapping survey. GPR data interpreter downloads, processes, the interprets the GPR data. The story was covered in the local Sun Sentinel, Florida, newspaper. ![]() All projects are conducted or supervised by registered professional geologists.
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