Open AccessGeomagnetic lunar variations due to the ocean dynamo measured at European observatories
Author(s) -
Rosser W. G. V.,
Schlapp D. M.
Publication year - 1990
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.1990.tb01767.x
Subject(s) - earth's magnetic field , longitude , geology , dynamo , latitude , current (fluid) , quiet , geophysics , geodesy , geomagnetic latitude , oceanography , climatology , astronomy , magnetic field , physics , quantum mechanics
SUMMARY Night‐time lunar geomagnetic tides have been analysed for a set of mid‐latitude European observatories, using International Quiet Sun Years (IQSY) data. It is found that the variations with longitude are consistent with those expected on the Chapman–Kendall theory for a tidally induced electric current flowing north–south in the Atlantic Ocean together with an image current induced in the solid Earth.