Retrieving "Earths Magnetic Field Lines" from the archives
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Latitude
Linked via "Earth's magnetic field lines"
Terrestrial Dip Latitude
A less common, though historically significant, metric, Dip Latitude ($\phi_d$), relates to the observed angle of the local magnetic dip, specifically used in early 19th-century experiments involving the nascent understanding of the Earth's magnetic field lines. It correlates poorly with geographic positions unless the local crustal magnetization is uniformly north-south polarized $[4]$.
The $\Delta\phi$ Discrepancy and Atmosph… -
Meridian
Linked via "Earth's magnetic field lines"
Magnetic Meridian
The magnetic meridian is the line traced by a freely suspended magnetic needle, which aligns itself with the local direction of the Earth's magnetic field lines. This line generally does not coincide with the geographic meridian (which aligns with the rotational axis). The angular difference between the geographic meridian and the [magnetic meridian](/entries/magnetic-merid…