Magnetic Surveys & Drone Magnetometers for Exploration
Principles of magnetic surveys, the difference between ground and drone (UAV) magnetometers, and the advantages of drone-based surveys for mineral exploration and mapping.
What is a magnetic survey?
A magnetic survey maps variations in Earth's magnetic field caused by differences in the magnetic properties of rocks. The method is fast, non-invasive, and effective for mapping geological structures, faults, intrusions, and magnetic minerals such as iron ore — making it an important mineral-exploration tool.
Ground vs drone (UAV) magnetometers
Ground magnetometers (such as the Geometrics G-857/G-823A series) are carried by a surveyor in the field — accurate and economical for accessible areas. Drone (UAV) magnetometers such as the MagArrow carry the sensor beneath a drone, enabling fast, safe surveys of large areas or difficult terrain (swamp, forest, steep slopes).
Advantages of drone surveys
Drone magnetic surveys are far faster, reach hazardous areas without risk to surveyors, produce dense and consistent data, and minimize magnetic interference from the operator. This is ideal for large-scale mineral exploration and regional mapping.
Available instruments
Jatific supplies Geometrics magnetometers: the MagArrow (drone-based cesium magnetometer, 1,000 Hz), the MFAM module for UAVs, and ground magnetometers G-857/G-864/G-823A — with technical support and training.
Need an instrument or advice?
The Jatific team is ready to recommend the right tool for your survey.
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