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New Paper

Geomagnetism Review 2018

New models: WMM and IGRF

Differential Magnetometer Measurements of GICs

Dr Juliane Huebert has published a paper about differential magnetometer measurements of geomagnetically induced currents (GIC) in a complex High Voltage network. This work was developed through the SWIGS (Space Weather Impact on Ground-based Systems) project.

Geomagnetism Review 2018

Read our review of the Geomagnetism Team's activities in 2018.

New models: WMM2020 and IGRF 13th Generation

New models are now available! World Magnetic Model 2020 has just been released, and IGRF 13th Generation model is also now available.

Keeping up with the North Pole(s)

Dr Will Brown explains how the wandering magnetic pole(s) influence everyday life.

Latest News

About BGS Geomagnetism

The Geomagnetism team measures, records, models and interprets variations in the Earth’s natural magnetic fields.

Our data and expertise help to develop scientific understanding of change in the Earth and the environment, from deep within the core out into space.

We also provide geomagnetic products and services to industry and to academic colleagues and we use our knowledge for information and education.

Video introduction


Modelling the Earth's magnetic field, space weather hazards.


About our magnetic observatory operations, UK surveying, equipment.

Data and Services

Observatory data, indices, models, charts, applications.


Overviews of the Earth's magnetic field, reversals, magnetic poles.

Global activity now!

Find out what the current global geomagnetic activity level is.