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Noise Reduction Techniques for Use in Determining Local Geomagnetic Field Changes

  • R. H. Ware
  • P. L. Bender
Conference paper
  • 38 Downloads
Part of the Advances in Earth and Planetary Sciences book series (AEPS, volume 5)

Abstract

Measurements of the difference in total field ΔF(t) have been made over a 16 km N-S path near Boulder. The behavior observed is quite different from that for an E-W path. The present accuracy of the narrow line rubidium magnetometers used is about 0.01 γ. The N-S variations appear to correlate mainly with variations in H rather than D, and may be associated with either gradients of external fields or currents in shallow conductivity anomalies. More recently three magnetometers have been set up on a straight E-W line so that the ‘second difference’ can be measured, and a transfer function from field component variation to the second difference can be determined. A generalization of this approach will be used for analyzing USGS tectonomagnetic data from California.

Keywords

Total Field Crustal Stress Noise Reduction Technique Poor Coherence Denver Basin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Center for Academic Publications Japan 1979

Authors and Affiliations

  • R. H. Ware
    • 1
  • P. L. Bender
    • 1
    • 2
  1. 1.Joint Institute for Laboratory AstrophysicsUniversity of Colorado and National Bureau of StandardsBoulderUSA
  2. 2.Quantum Physics DivisionNational Bureau of StandardsUSA

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