Nice. What causes the activity increase?

But it’s a closed system within the atmosphere because when massive volcanic eruptions occur near the equator and enough ash and dust is in the upper atmosphere, it blocks the sun’s rays and leads to periods of rapid glacial expansion

So when there are large glaciers present it’s like have a lid on a boiling pot, steam can be released but only if the whole plate moves to allow it, and when they recede it’s kind of like when you have a lid partially covering a boiling pot but pushed to the side to allow steam out.

There’s a fascinating correlation with the weight of glacial and polar ice on tectonic plates. As glaciers recede and planetary ice lessons, the magma underneath tectonic plates is able to release more volcanic energy because the mass of the ice helps weigh down the plates.