CSAMT: High Resolution Resistivity Sounding

Controlled Source Audio-frequency Magnetotellurics (CSAMT) is a high resolution resistivity method commonly used in minerals exploration, and it also has applications in environmental and engineering problems in low resistivity environments or when deep data are required. Logistically, CSAMT has many advantages over some of the other resistivity methods, since it is a far-field electromagnetic technique. The field crew is usually small (3 or 4 people), the method works well in noisy environments, and survey speed is relatively fast if a multichannel receiver is used. Successful environmental projects include groundwater location, mapping contaminant plumes, monitoring in-situ leaching operations at mines, and locating brine injection leaks in oil fields.