Magnetic Gradiometry
Our Expertise
Magnetic Gradiometry (MG) measures the difference in magnetic strength between buried objects or deposits and the surrounding soil to image the subsurface. MG is the most efficient geophysical method although it is extremely sensitive and inoperable in highly metallic environments. MG is primarily used to identified burned structures, hearths, and pottery kilns as well as buried ditches and fortifications. It has also been used with some success in cemeteries for identifying unmarked graves and accumulations of buried structural debris from historic structure demolition.
The team at ArchaeoSpatial Analytics is experienced in multiple magnetic instruments such as the Bartington Grad 601-2 and Sensys FGM5600 to ensure the client’s needs are always met regardless of survey size. These instruments are the most efficient and cutting-edge magnetic technologies available.
Applications
- Buried architectural features
- Kilns/Ovens/Hearths
- Iron objects
- Buried ditches, trenches, and pits
Magnetic gradiometry survey of an Indigenous site in east Alabama. Arrows indicate a buried trash pit (green) and a structure (red).