Of all the available geophysical techniques, gradiometry is
the most time and cost effective. As such it is the industry
standard and usually the technique of first choice in archaeological
Gradiometry detects extremely small variations in the earth's
magnetic field and is set up to remove the earth's field sensing
only local changes. It is excellent for locating ditches,
pits, middens, hearths, kilns and, depending on the soils and
materials used, will often show walls and foundations.
There has been much discussion about the efficacy
of gradiometry on igneous and metamorphic geology, for example parts
of Scotland. However, there are few areas where this technique
cannot be applied.
We use a Bartington Grad 601-2, which is actually two
instruments together allowing for quicker survey times, with
associated cost savings.
Appropriate application of gradiometer
Archaeological Evaluations to locate and
Environmental Assessments and Civil
Engineering to locate and
Buried metal objects
Buried storage tanks