electromagnetic survey

An electromagnetic survey is a geophysical method used to explore the Earth's subsurface by measuring how it responds to electromagnetic fields. This technique involves transmitting electric or magnetic signals into the ground and then detecting the returning signals. Different materials in the Earth, such as minerals, water, and rocks, alter these signals in unique ways. By analyzing the variations, geologists can map underground features, locate resources like groundwater or minerals, and assess environmental conditions. It's widely used in mining, oil exploration, and environmental studies to gather valuable information about what's beneath the surface.