Premium
Contribution of magnetospheric field‐aligned current to geomagnetic bays and Sq fields: A comment on partial ring‐current models
Author(s) -
Fukushima Naoshi,
Kamide Yohsuke
Publication year - 1973
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/rs008i011p01013
Subject(s) - ring current , earth's magnetic field , magnetosphere , current (fluid) , ionospheric dynamo region , geophysics , geomagnetic storm , physics , geomagnetic secular variation , field (mathematics) , asymmetry , magnetic field , atmospheric sciences , mathematics , quantum mechanics , pure mathematics , thermodynamics
Curved field‐aligned currents in the magnetosphere produce a noticeable geomagnetic effect on the earth's surface not only in the D component but also in the H component. For geomagnetic bays or longitudinal asymmetry of Δ H (deviation in H from its quiet level) during magnetic storms, the contribution from the field‐aligned currents is greater than that of a partial ring current. The Sq field also may be appreciably influenced by the field‐aligned currents associated with the magnetospheric plasma convection.