Accession Number : ADA138542

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

Descriptive Note : Master's thesis,


Personal Author(s) : Anthony,S J

PDF Url : ADA138542

Report Date : Dec 1983

Pagination or Media Count : 144

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).

Descriptors :   *Geomagnetism, Ultralow frequency, Variations, Magnetic fields, Coherence, Data acquisition, Statistical analysis, Computer applications, Computer programs, Theses

Subject Categories : Geomagnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE