Abstract
AbstractA unique system for geomagnetic archaeometry is presented. It uses extremely sensitive superconducting quantum interference devices (SQUIDs) as magnetic field sensors, laid out as intrinsic gradiometers. These sensors are mounted on a non‐metallic cart, which guarantees smooth movement even at high speeds. Using a differential global positioning system (GPS) together with an inertial system the measured magnetic field gradient data are located on the mapped area with centimetre resolution and the height profile is also provided using the GPS. All data are stored in a data logger and partially online displayed on a laptop computer.At the time of this report, the system is pushed manually and has been tested on a Neolithic double ring ditch near Weimar, Germany. In a gateway through the rings, remains of palisades and buildings have been well resolved, confirming the high sensitivity of the SQUID‐based system. An excavation at the ring ditch showed that material with enhanced susceptibility was the origin of the magnetic field gradient signals. Copyright © 2007 John Wiley & Sons, Ltd.
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