Magnetic anomaly detection

Magnetic anomaly detection involves using sensitive instruments to measure variations in Earth's magnetic field caused by different underground materials or structures. These variations happen because rocks and minerals have different magnetic properties than surrounding materials. By detecting these anomalies, scientists can locate underground features like mineral deposits, tunnels, or other geological formations without drilling. This technique is valuable in mineral exploration, archaeological investigations, and detecting hidden objects, providing a non-invasive way to gather detailed information about what lies beneath the surface.