Search

Search Constraints

Start Over You searched for: Place Arkansas Remove constraint Place: Arkansas Resource Type Line data Remove constraint Resource Type: Line data Subject Magnetic fields Remove constraint Subject: Magnetic fields

Search Results

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.