What is the Earth's magnetic field?


Magnetic North, Geomagnetic and Magnetic Poles

Secular variation of geomagnetic dipole moment

If we rotate a compass for southern hemisphere in Japan... (MPG:2.3MB)

Animation of geomagnetic secular variation for the last 400 years.

International Geomagnetic Reference Field (IGRF)   Model field at a point   Geomagnetic Elements

Geomagnetic field observation and Collection of the data
    (Geomagnetic observatories on the Google Earth)

Pamphlet of our Center (PDF)

Geomagnetic Field Frequently Asked Questions by NGDC, USA.

Link to The Great Magnet, the Earth by David P. Stern

Link to The Exploration of the Earth's Magnetosphere by David P. Stern and Mauricio Peredo