What is a magnetic pole?
A magnetic pole is a magnet with a North or South seeking magnetic field. If you break a magnet in half, it will have another North and South seeking pole. In other words, each magnet will have it s own North and South poles. No matter how many times you break a magnet in half, it will have it s own North and South poles.
• The magnetic poles are defined as the area where dip (I) is vertical. You can compute this area using magnetic field models, such as the World Magnetic Model (WMM) and the International Geomagnetic Reference Field (IGRF). You can also survey for the magnetic pole, using instruments that measure the magnetic field strength and direction. In practice, the geomagnetic field is not exactly vertical at these poles, but is vertical on oval-shaped loci traced on a daily basis, with considerable variation from one day to another, and approximately centered on the dip pole positions. Magnetic declination (D) is unreliable near the poles.
