Map of Equatorial Plasma Bubble (EPB) events across the Earth

A map of the Earth with the locations of plasma bubble events superimposed on it.
Map of Equatorial Plasma Bubble (EPB) events across the Earth. Most bubbles occur over the Atlantic in a region called the ‘South Atlantic Anomaly’. Here high energy particles and gamma rays penetrate deep into our atmosphere and influence the creation of bubbles.
Sachin Reddy/University College London/Mullard Space Science Laboratory