Magnetic anomalies of steel drums: a review of the literature and research results of the INGV

The detection and evaluation of the status of disposal sites that contain
hazardous waste materials is becoming an increasingly important element
in environmental investigations. Close cooperation between the Istituto
Nazionale di Geofisica e Vulcanologia (INGV; National Institute of Volcanology
and Geophysics) in Rome and the Italian environmental police
has resulted in numerous underground investigations of different buried
materials. Among the geophysical investigation tools, magnetometry is the
most effective, rapid and precise of all of the geophysical methods for localizing
buried steel drums. Analysis of magnetic map anomalies can provide
a variety of information about buried materials, including extension,
distribution and depth, with processing of the acquired magnetic data.
This information is also very useful in case of excavations that are aimed
at the recovery of hazardous waste. This study determines the most relevant
analyses reported in the literature, with modeling of magnetometric
methods for environmental applications both theoretically and experimentally.
Some studies and research results achieved by the INGV in relation
to magnetic anomalies produced by buried steel drums are also
reported, as found in field operations and as achieved from test sites.

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