Accession Number : AD0610986

Title :   MAGNETIC DISTURBANCE IN THE AREA OF OPERATIONS OF DRIFTING STATIONS NORTH POLE 3 AND NORTH POLE 4,

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

Personal Author(s) : Milyaev,N. A.

Report Date : AUG 1960

Pagination or Media Count : 12

Abstract : The results of magnetic variation observations at stations North Pole 3 and North Pole 4 permit the following conclusions to be drawn: (1) In years of minimum magnetic activity (1954-1955) the mean level of disturbance in the circumpolar region is lower by 1.5 to 2 times than in the zone of maximum magnetic activity (phi = 68 degrees). (2) In the formation of the mean level of magnetic disturbance in the circumpolar region, the principal role is played by the morning and daytime disturbances. The morning disturbance maximum occurs at 3-5 hrs GMT and attains its greatest development in the summer season. Disturbance in the circumpolar (pole-cap) region is greatest in summer and is 2-3 times higher than in the winter season. (3) The night disturbance in the circumpolar region is not very noticeable and plays an insignificant part in the general level of disturbance. Disturbance is at its smallest in winter (20-30 gamma) and has very little variation throughout the 24 hours. (4) The western part of the circumpolar region of the Arctic, it seems, is inside the postulated second zone of enhanced magnetic activity and is characterized by the presence of a daytime disturbance, occurring at 13-14 hrs UT.

Descriptors :   (*GEOMAGNETISM, ARCTIC REGIONS), (*ARCTIC REGIONS, GEOMAGNETISM), ICE ISLANDS, TEST FACILITIES, INSTRUMENTATION, MAGNETIC FIELDS, OSCILLATION, MEASUREMENT, USSR

Distribution Statement : APPROVED FOR PUBLIC RELEASE