Coherence Study of Geomagnetic Fluctuations in Frequency Range .04 - 0.6 HZ between Remote Land Sites.

Abstract

Fluctuations in the geomagnetic field were measured by three orthogonally mounted coil sensors at two land sites separated by 40 km. Computer generated voltage vs time and magnetic field vs time plots failed to reveal the presence of dominant micropulsations. A coherence study between the two sites revealed coherence values of 0.6 - 0.8 in the frequency range 0.4 - 0.6 Hz. This is compared to a coherence study completed at the Naval Air Development Center, Warminster, Pennsylvania, between land sites 24.8 km apart. The NADC coherence values are lower (0.3 - 0.6).

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1983
Accession Number
ADA138542

Entities

People

  • S. J. Anthony

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Background Noise
  • Computer Programming
  • Computer Programs
  • Computers
  • Digital Data
  • Frequency
  • Magnetic Fields
  • Mainframe Computers
  • Mass Storage
  • Measurement
  • Pennsylvania
  • Plastic Explosives
  • Rdx
  • Recording Systems
  • Signal Generators
  • Tape Recorders
  • United States

Readers

  • Atmospheric Remote Sensing.
  • Plasma Physics / Magnetohydrodynamics
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.