Open AccessNote on the Mean Monthly Values and the Annual Inequalities of the Magnetic Elements
Author(s) -
Chree C.
Publication year - 1928
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.1928.tb05359.x
Subject(s) - greenwich , secular variation , magnetic declination , geodesy , acceleration , geography , climatology , geology , meteorology , physical geography , geophysics , earth's magnetic field , physics , magnetic field , classical mechanics , quantum mechanics , soil science
A bstract The ultimate cause of the present note is a recent paper by Dr. la Cour, Director of the Danish Meteorological Service, which dealt with mean monthly values of the magnetic elements from 1911 to 1920 at Rude Skov (near Copenhagen) and ten other European observatories, including Greenwich, Kew, and Eskdalemuir. Dr. la Cour applied corrections for secular change assumed to proceed at a uniform rate throughout the year, and discussed the residuals left in the changes of the magnetic elements from month to month. The present paper is devoted mainly to the phenomena exhibited at Kew and Eskdalemuir. At these and other stations in North‐Western Europe secular change of declination underwent a large acceleration during the period considered. The consequences of this acceleration and of a variety of other special features, especially the use of the international quiet days at Kew, are discussed.