- The NOAA National Geophysical Data Center maintains a data set of annual magnetic north pole coordinates going back to the year 1590, derived from early measurements from ships logs to modern day techniques.
Noting that there has been lots of reporting of pole shift lately, to the point where the phenomenon is actually causing real-world issues such as temporary airport closures, a deeper investigation was in order. Full story:
* Ordinary Compasses Thrown Off by Changes in Earth's Magnetic Field... Magnetic Polar Shifts Causing Massive Global Superstorms...National Geographic: North Magnetic Pole Moving East Due to Core Flux... Shift of Earth's magnetic north pole impacts Tampa airport... ...National Geographic: Earth's Core, Magnetic Field Changing Fast, Study Says... Science News: Simulations And Ancient Magnetism Suggest Mantle Plumes May Bend Deep Beneath Earth's Crust... National Geographic (November 19, 2008): "High-energy electrons captured over Antarctica could reveal the presence of a nearby butMYSTERIOUS ASTROPHYSICAL OBJECT that's bombarding Earth with cosmic rays, researchers say":