Last updated by The POOG on June 19, 2021.

This topic includes the earth’s magnetic field, migration of the magnetic poles, and the magnetosphere which is earth’s shield.

Magnetometer Networks

Magnetometers are devices that measure the earth’s magnetic field strength. This topic requires scientific knowledge to understand. Natural Resources Canada runs a Canadian magnetometer network found at Geomagnetism Canada. A list and map of Canadian magnetic observatories can be found here.

Daily data is shown graphically for the observatories and is shown in Figure 1 below.

Figure 1. NRCAN geomagnetic observatory data plots.



  1. What Is A Magnetometer?, June 2, 2017.
  2. Z. M. K. Abda, N. F. A. Aziz, M. Z. A. A. Kadir and Z. A. Rhazali,. A Review of Geomagnetically Induced Current Effects on Electrical Power System: Principles and Theory. IEEE Access, vol. 8, pp. 200237-200258, 2020, doi: 10.1109/ACCESS.2020.3034347.