Accession Number : AD0610930

Title :   THE DICKSON ISLAND AND CAPE CHELYUSKIN Q-INDICES OF MAGNETIC ACTIVITY,

Corporate Author : DIRECTORATE OF SCIENTIFIC INFORMATION SERVICES OTTAWA (ONTARIO)

Personal Author(s) : Fel'dshtein,Ya. I.

Report Date : JAN 1961

Pagination or Media Count : 15

Abstract : During the IGY, vertical ionospheric soundings, radiowave absorption studies and auroral radio reflection studies were conducted at 15-minute intervals. For comparison of the ionospheric parameters and auroral data with magnetic activity, the quarter-hourly Q-index was introduced into the routine of the high-latitude magnetic observatories, as proposed by J. Bartels (Geomagnetism, 1956, no. 1). This index describes the geomagnetic activity during 15-minute intervals centered at 0, 15, 30 and 45 minutes of each hour. In deriving the Q-index, only the variations of the horizontal elements of the geomagnetic field are used, namely, the declination D and the horizontal component H. The subject of the present paper is the study of the behavior of the new index of magnetic activity and the comparison of the results obtained with those of the old indices hitherto employed. Materials for the research were the Dickson Island and Cape Cheliuskin magnetograms recorded during the period from July 1956 to July 1957.

Descriptors :   (*GEOMAGNETISM, ARCTIC REGIONS), ATMOSPHERIC SOUNDING, AURORAE, RADIO WAVES, ELECTROMAGNETIC WAVE REFLECTIONS, GEOPHYSICS, USSR

Distribution Statement : APPROVED FOR PUBLIC RELEASE