Accession Number : AD0632166
Title : SECULAR VARIATIONS IN THE MAGNETIC FIELD STRENGTH OF SUNSPOT GROUPS.
Descriptive Note : Scientific rept.,
Corporate Author : OSLO UNIV (NORWAY) INST OF THEORETICAL ASTROPHYSICS
Personal Author(s) : Ringnes,Truls S.
Report Date : 1965
Pagination or Media Count : 46
Abstract : The relation between area and magnetic field strength of sunspot groups, the magnetic life history of long -lived spots and frequency distribution of observed maximum field strength of sunspot groups were studied over the period 1917-1958. The secular variations which are detected are discussed and compared with the secular variations established previously in the number of sunspot groups, their areas, area distribution etc. Finally a brief account is given of the eighty-year cycle of sunspots. (Author)
Descriptors : (*SUNSPOTS, *MAGNETIC FIELDS), MAGNETOHYDRODYNAMICS, ASTROPHYSICS, SOLAR ATMOSPHERE
Subject Categories : Astrophysics
Plasma Physics and Magnetohydrodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE