1 research outputs found
Successful adaptation of 3D inversion methodologies for archaeological-scale, total field magnetic datasets
Despite the development of advanced processing and interpretation tools for magnetic
datasets in the fields of mineral and hydrocarbon industries, these methods have not
achieved similar levels of adoption for archaeological or very near surface surveys.
Using a synthetic dataset we demonstrate that certain methodologies and assumptions
used to successfully invert more regional-scale data can lead to large discrepancies
between the true and recovered depths when applied to archaeological-type anomalies.
We propose variations to the current approach, analysing the choice of the depthweighting
function, mesh design and parameter constraints, to develop an appropriate
technique for the 3D inversion of archaeological scale datasets. The results show a
successful recovery of a synthetic scenario, as well as a case study of a Romano-Celtic
temple in the UK. For the case study, the final susceptibility model is compared with
two coincident ground penetrating radar surveys, showing a high correlation with the
comparative depth slices. The new approach takes interpretation of archaeological
datasets beyond a simple 2D visual interpretation based on pattern recognition