We use cookies to collect information about how you use data.gov.uk. We use this information to make the website work as well as possible.
You can change your cookie settings at any time.
BETA This is a new service – your feedback will help us to improve it
Remove filters
Magnetograms are records of variations in the strength and direction of the Earth’s magnetic field. Historically these magnetograms were recorded on paper using photographic techniques. In the UK,...