MAN-MADE ELECTROMAGNETIC INTERFERENCE AT EXTREMELY LOW FREQUENCIES,

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Abstract:

In the electromagnetic spectrum between 6 and 36 c.p.s. several classes of manmade noise have been observed in rural areas adjacent to cities. Their probable sources are suggested. In many Canadian semirural areas this interference, though appreciable, is not sufficient to prevent reception of natural electromagnetic background, most of which is believed to originate with tropical lightning and to be propagated as Schumann resonance modes in the earth-ionosphere cavity. Author

Author(s):
Lokken, J. E. ; Shand, J. A.
Author Organization(s):
PACIFIC NAVAL LAB ESQUIMALT (BRITISH COLUMBIA)
Supplementary Note:
Pub in Canadian Journal of Physics v42 p1902-07 Oct 1964 (Copies available only to DDC users).
Annotation:
Reprint: Man-made electromagnetic interference at extremely low frequencies.
Pagination:
0008

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
Reprint-64-6
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*SIGNALS, EXTREMELY LOW FREQUENCY), (*EXTREMELY LOW FREQUENCY, SIGNALS), (*INTERFERENCE, EXTREMELY LOW FREQUENCY), CANADA, NOISE, ELECTROMAGNETIC RADIATION, MEASUREMENT, BANDWIDTH, MODULATION, MAGNETIC FIELDS, PROPAGATION
Report Date:
1964 May 27