Magnetic Surveying for anthropogenic objects: Data acquisition

The theory, data acquisition and data processing. The webinars are jointly delivered by Seequent and Geometrics. Search for man-made objects in the near surface has been an important objective for near surface geophysicists. Items of interest include Unexploded Ordnance (UXO) from both training activities and warfare, archaeological investigations, and old infrastructure such as pipelines, cables and underground storage tanks where the available maps and drawings are not present or inadequate. Magnetic methods have been one of the primary methods for detecting these objects.

This webinar focusses on the best practices for data acquisition. Survey design decisions are based on site conditions, survey objectives, such as object size and depth, and should include:

• Total field or gradiometer.
• Sensor sensitivity
• Influence of platform noise
• Survey layout (line spacing, orientation)
• Sampling interval
• Need for a base station and its location