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Dynamo Currents, Winds, and Electric Fields
Author(s) -
Matsushita S.
Publication year - 1969
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs004i009p00771
Subject(s) - dynamo , physics , ionosphere , dynamo theory , geophysics , earth's magnetic field , thermosphere , current (fluid) , electric field , atmospheric sciences , computational physics , meteorology , geodesy , geology , magnetic field , quantum mechanics , thermodynamics
After a brief presentation of S q and L electric current systems deduced from geomagnetic data, electric conductivities and wind models in the dynamo region are discussed. It is then shown that the solar negative‐mode thermal diurnal tide and the lunar semidiurnal gravitational tide having a phase shift with altitudes produce the best fit S q and L current systems, respectively. Distributions of electrostatic fields are computed, and electromagnetic drift speeds in the ionospheric F region are also examined. These calculated values agree well with observed results.