2026-05-08T11:16:31Z

Magnetic Field - Secular Variation of the Declination Component for the Epoch 2010.0

Gbl Index Year Im:

2010

Dct Creator Sm:

National Geophysical Data Center

Dct Description Sm:

This map layer shows isoporic lines (lines of equal annual change, or secular variation, in the declination of the Earth's magnetic field), derived...