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The Location of the Dip Equator at E ‐layer altitude
Author(s) -
Cain Joseph C.
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/rs004i009p00781
Subject(s) - altitude (triangle) , magnetic dip , equator , earth's magnetic field , geodesy , atmospheric sciences , geology , degree (music) , position (finance) , physics , geophysics , magnetic field , latitude , mathematics , geometry , finance , quantum mechanics , acoustics , economics
The position of the magnetic dip equator at 100 km and the gradient of position with time and altitude are tabulated using the POGO (10/68), GSFC (12/66), and IGRF (10/68) geomagnetic field models. The positions agree within a few tenths of a degree with each other but differ up to 2° from older models and charts. The maximum gradients with time (0.2°/yr) and altitude (−0.3°/100 km) occur to the west of Africa.