Here’s another interesting correlation. The Position of the north magnetic pole has been shifting rapidly over the last several decades. The rate of change of it’s declination correlates with the variations in Earth’s length of day and the motion of the sun relative to the centre of mass of the solar system which we discussed in my first post.
More interesting information on Earth’s magnetism and it’s relationship with the sun here: http://www.appinsys.com/GlobalWarming/EarthMagneticField.htm
If the changes in Length of Day are related to changes in the circulation of currents of molten material beneath the Earth’s crust, we could speculate that magnetic iron ores are shifting their predominant accumulations and this affects the location of the magnetic north pole.