Magnetometers and magnetic gradiometers are extremely useful geophysical tools for subsurface mapping. OFG has developed proprietary magnetic compensation algorithms to remove vehicle heading and attitude effects from AUV and ROV based magnetometer surveys. These magnetic surveys can be used to map or identify:
- Hydrothermal vents and associated mineral (seafloor massive sulphide) deposits
- Pipelines and cables
- Mines & UXO
- Ship signatures
Magnetic surveys can be done concurrently with a variety of other sensors including multibeam, sidescan, subbottom, chemical sensors, and cameras.