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Cemetery Surveys Conducted Nationwide
All surveys conducted by Certified Professional Geologists (PG)
GeoModel, Inc. is registered with the FCC and uses only FCC-approved GPR equipment
GeoModel, Inc. uses ground penetrating radar (GPR) for locating graves (marked and unmarked) quickly and efficiently. A GeoModel, Inc. survey crew can cover large areas in a day depending on the terrain and vegetation cover.
Locating Graves - Introduction
Ground penetrating radar (GPR) surveys are useful for locating graves by detecting the buried casket or vault. 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.
Remains of burials are easier to locate in sandy soils that do not contain tree roots or stones. In cases where a vault or casket does not exist, or where the casket has completely deteriorated, GeoModel, Inc. can examine the GPR data for disturbed soil, grave trenches, or other indications of the burial.
GeoModel, Inc. conducts GPR surveys for locating graves using a GPR digital control unit and an antenna with a frequency of 400-megaHertz (MHz). 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.
GPR Surveys for Locating Graves
GPR surveys for locating graves are efficiently conducted. 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.
GeoModel, Inc. operator pulling a 400-MHz antenna in a cemetery (above left) and using the GPR survey cart (above right).
GeoModel, Inc. confirmed gravesites with headstones and footstones (above left) and located gravesites with minimal or headstones (above right), marked on the ground with orange paint.
Cemetery and Gravesite Surveys
GeoModel, Inc. conducts ground penetrating radar surveys for locating unmarked gravesites and confirming marked gravesites at cemeteries.
GPR profile and cross-sectional diagram (above) showing several gravesites (caskets) detected using ground penetrating radar (GPR). 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).
Cemetery and Gravesite Mapping Surveys
In addition to marking the locations of gravesites on the ground with temporary paint marks or flags, GeoModel, Inc. can conduct a gravesite mapping survey, for which we provide a site map (AutoCAD) with the locations of the graves and headstones plotted on it. This in-office cemetery mapping service is provided at additional cost to field marking of graves.
The cemetery map (above center) shows the result of a GeoModel, Inc. cemetery mapping survey in which grave locations are located in relation to headstones. Note that some of the graves don't necessarily match up with the headstones. In some cases, there is no headstone associated with the grave.
3-D Cemetery and Gravesite Visualization
In some special cases, 3-Dimensional imaging can be used to better define graves or provide impressive presentation visualizations. 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.
Three-dimensional GPR images, such as the one above, can be produced using raw field data and post-processing software. Below, a GeoModel, Inc. GPR data interpreter downloads, processes, the interprets the GPR data.
GeoModel, Inc. in The News
GeoModel, Inc. has been in the news in Florida for our grave location surveys.
GeoModel, Inc. conducted a ground penetrating radar survey, at a cemetery in south Florida, to locate grave sites.
A local reporter took this photo as GeoModel, Inc. was conducting its survey. The story was covered in the local Sun Sentinel, Florida, newspaper.
GeoModel, Inc. was founded in 1991 as a geophysical services and environmental consulting firm. The company principals have over 50 years of combined experience and have conducted numerous ground penetrating radar cemetery and grave location projects worldwide. All projects are conducted by registered professional geologists.
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