AN INVESTIGATION OF THE NATURAL ELECTROMAGNETIC RADIATIONS BETWEEN 10C/S AND 10 KC/S

Naturally occurring electromagnetic radiation in the audio-frequency range has been studied at Kiruna Geophysical Observatory (geomagnetic latitude 65.3N) since 1958. The results obtained are to some extent compared with similar measurements at Sagamore Hill, Mass., USA (geomagnetic latitude 54N) ca...

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Bibliographic Details
Main Authors: Egeland ,Alv, Ustafsson ,George G., Olsen ,Sven, Barron,William
Other Authors: KIRUNA GEOPHYSICAL OBSERVATORY (SWEDEN)
Format: Text
Language:English
Published: 1964
Subjects:
*ELECTROMAGNETIC RADIATION
EXTREMELY LOW FREQUENCY
VERY LOW FREQUENCY
SEASONAL VARIATIONS
DIURNAL VARIATIONS
PROPAGATION
CURVE FITTING
CALIBRATION
NOISE
ATMOSPHERICS
GRAPHICS
SWEDEN
MASSACHUSETTS
Kiruna
Online Access:http://www.dtic.mil/docs/citations/AD0437820
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0437820
Description
Summary:Naturally occurring electromagnetic radiation in the audio-frequency range has been studied at Kiruna Geophysical Observatory (geomagnetic latitude 65.3N) since 1958. The results obtained are to some extent compared with similar measurements at Sagamore Hill, Mass., USA (geomagnetic latitude 54N) carried out during the same period. Several emission bands, which are quite distinct from the normal backgroundsignals and are obtained as strong enhancements in portions of the spectrum, have been recorded. (Author)

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