NYU Spatial Data Repository

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You searched for: Author National Geophysical Data Center Remove constraint Author: National Geophysical Data Center Publisher National Atlas of the United States Remove constraint Publisher: National Atlas of the United States Subject Magnetic declination Remove constraint Subject: Magnetic declination Place Massachusetts Remove constraint Place: Massachusetts Place United States Remove constraint Place: United States Format Shapefile Remove constraint Format: Shapefile
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1. Magnetic Field - Declination Component for the Epoch 2010.0

2010. National Geophysical Data Center. This map layer shows isogonic lines (lines of constant declination of the Earth's magnetic field), derived from the International Geomagnetic Refer... National Atlas of the United States.

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

2010. National Geophysical Data Center. This map layer shows isoporic lines (lines of equal annual change, or secular variation, in the declination of the Earth's magnetic field), derived... National Atlas of the United States.