MAGNETOMETER, PHOTOMETER, AND EARTH OBSERVATIONS AT KIRUNA.

The magnetic data have been represented by the K-indices, which give the range of the magnetic variation during three hour periods. The auroral activity has been measured by a photometer scanning along the geographic meridian. The intensity of the green auroral line has been measured, and an auroral...

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Bibliographic Details
Main Authors: Gustafsson,Georg, Egeland,Alv
Other Authors: KIRUNA GEOPHYSICAL OBSERVATORY (SWEDEN)
Format: Text
Language:English
Published: 1964
Subjects:
*GEOMAGNETISM
*MAGNETOMETERS
TABLES(DATA)
ASTRONOMY
AURORAL ZONE
EARTH CURRENTS
Kiruna
Online Access:http://www.dtic.mil/docs/citations/AD0434778
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0434778
Description
Summary:The magnetic data have been represented by the K-indices, which give the range of the magnetic variation during three hour periods. The auroral activity has been measured by a photometer scanning along the geographic meridian. The intensity of the green auroral line has been measured, and an auroral index related to the intensity of the 5577 Angstrom units line has been included in the report. An equipment for the measurement of the earth current potentials has been installed at the observatory. The potential variations of the east-west, and northsouth components have been measured. It has been found that the north-south component is 3.5 times stronger than the east-west component. The data of the earth current variations (northsouth component) have been represented by the range of variation in mV/km over three hour intervals. (Author)

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