Detecting near-surface buried targets by a geophysical cluster of electromagnetic, magnetic and resistivity scanners

Abstract

We recently built up a geophysical cluster that includes three kinds of instruments EM61-MK2, Magnetometer and OhmMapper, which can simultaneously measure the secondary electromagnetic, magnetic and apparent resistivity data. This paper will demonstrate field experiments of using this cluster and development of integrated data proceeding schemes that can individually and simultaneously process the three kinds of data measured by the cluster, and yield integrated images of near-surface buried targets. We conducted mapping experiments on a 20m×20m synthetic field site, beneath which five targets: a cross iron pipe, two small iron cylinder and block, a piece of limestone and PVP pipe are buried in different depths. The results show that the integrated cluster and data-processing schemes are successful in detecting these near-surface buried targets.