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Reducing tensor magnetic gradiometer data for unexploded ordnance detection

Scientific Investigations Report 2005-5046

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Abstract

We performed a survey to demonstrate the effectiveness of a prototype tensor magnetic gradiometer system (TMGS) for detection of buried unexploded ordnance (UXO). In order to achieve a useful result, we designed a data-reduction procedure that resulted in a realistic magnetic gradient tensor and devised a simple way of viewing complicated tensor data, not only to assess the validity of the final resulting tensor, but also to preview the data at interim stages of processing. The final processed map of the surveyed area clearly shows a sharp anomaly that peaks almost directly over the target UXO. This map agrees well with a modeled map derived from dipolar sources near the known target locations. From this agreement, it can be deduced that the reduction process is valid, making the prototype TMGS a foundation for development of future systems and processes.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Reducing tensor magnetic gradiometer data for unexploded ordnance detection
Series title:
Scientific Investigations Report
Series number:
2005-5046
Edition:
Version 1.0
Year Published:
2005
Language:
ENGLISH
Description:
1 p. online; 10 p. report
Scale:
24000