|Aurora captured in Iceland (from Heiko Buxel, BGS)|
The line plot data was turned into a map of the magnetic field variation across the UK for each minute. The video of the storm is shown below. At around 23:30 UT the aurora moves southward across the UK (left panel). Several more bursts of activity can be seen later in the day from 12:00 to 18:00 UT.
Without the new magnetometers, it would not be possible to see such detail. These measurements will lead to new understanding about how the magnetic field changes over regions smaller than 1000 km, such as the UK, during large geomagnetic storms.
We wish to thank the STFC for the funding to create and disseminate the instruments and to the various host schools and institutions who provided the data. Data are freely available at: http://spp-aurorawatch01.lancs.ac.uk/data/