Underground structure detection by surface magnetic gradient measurements

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Description

This problem involves magnetic induction methods to locate and determine the depth of a subsurface line source of magnetic field. The origin of the field may be self-generated or induced by a surface transmitter. The experimental method requires measuring the horizontal gradient of either the vertical or horizontal component of the field rather than the field itself so as to increase signal to noise ratio. A mathematical outline is presented and experimental results are discussed. Keywords: underground detection, electromagnetic theory, magnetic induction, tunnels, underground structures, imaging

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9 p.

Creation Information

Kelly, R. E. (Robert E.) January 1, 2001.

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Description

This problem involves magnetic induction methods to locate and determine the depth of a subsurface line source of magnetic field. The origin of the field may be self-generated or induced by a surface transmitter. The experimental method requires measuring the horizontal gradient of either the vertical or horizontal component of the field rather than the field itself so as to increase signal to noise ratio. A mathematical outline is presented and experimental results are discussed. Keywords: underground detection, electromagnetic theory, magnetic induction, tunnels, underground structures, imaging

Physical Description

9 p.

Source

  • Submitted to: Proceedings of SPIE, 3rd International Conference on Subsurface and Surface Sensing Technologies and Applications, July 30-August 1, 2001, San Diego, CA.

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  • Report No.: LA-UR-01-3357
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975573
  • Archival Resource Key: ark:/67531/metadc934667

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Dec. 12, 2016, 1:43 p.m.

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Kelly, R. E. (Robert E.). Underground structure detection by surface magnetic gradient measurements, article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc934667/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.