• 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