Magnetic methods measure the earth’s magnetic field and anomalies caused by naturally occurring and manmade ferrous materials. Theoretical models can be used to approximate size, depth, shape, and make up of objects creating anomalies. The data is measured with magnetometers that are designed to measure the changes in the magnetic field. Various components of the magnetic field can be measured with these instruments. Gradiometers and base stations are used to reduce the effects on the horizontal field and magnetic storms. Data are presented as profiles and in the form of magnetic intensity contour maps. Collier utilizes magnetic methods on a variety of engineering and environmental applications.
Typical Applications of Magnetic Methods
- Buried metal objects
- Ordnance UXO
- Utility mapping and detection
- Clearing of borehole locations
- Abandoned wells
- Faults and structure