Archaeology and Forensics
Magnetic prospection is common in archaeology and forensics. The presence of buried artefacts containing ferromagnetic materials, the long-term change in magnetic properties associated with a firing process, or the action of digging, changes the distribution of the soil’s magnetic properties. All are sources of magnetic anomalies.
Gradient measurements make the instrument portable by removing the background magnetic field from the sensing magnetometer.
Single-axis sensors are well-suited to this application, but the three-axis sensors used in the Grad-13 can help provide an additional level of information about the source of the anomaly.
The Non-Magnetic Cart enables you to mount multiple sensors on the same platform, permitting cart-based GPS-enabled surveying by hand, or with the help of a motorised vehicle to survey an area in less time.
Magnetic susceptibility is used for rapid assessment of a site. It detects changes of susceptibility, which may be associated with human activities. Field mapping of a site can be done using the MS3 and MS2D or MS2F, depending on ground conditions. Vertical profiling can be carried out in a trench using an MS2K, or in a borehole using an MS2H. The same mapping tools can also be used for small-scale surveys to identify changes in susceptibility associated with, for example, the action of digging and refilling.