You searched for: Subject Magnetic fields Remove constraint Subject: Magnetic fields Subject Geoscientific Information Remove constraint Subject: Geoscientific Information Place Arkansas Remove constraint Place: Arkansas Place Arizona Remove constraint Place: Arizona Data type Line Remove constraint Data type: Line
1. Magnetic Field - Secular Variation of the Vertical Component of the Total Field Intensity for the Epoch 2010.0
2010. National Geophysical Data Center. This line shapefile shows lines of equal annual change (secular variation) in the vertical component of the total field intensity of the Earth's ma... National Atlas of the United States.
2010. National Geophysical Data Center. This line shapefile shows lines of equal vertical intensity of the Earth's magnetic field, derived from the International Geomagnetic Reference Fie... National Atlas of the United States.