As a result, cold water sinks and hot water rises here. Each year, on average, Yellowstone has 12-18 'felt' earthquakes. There are tens of thousands of earthquakes in Yellowstone every year, but most of them are 'micro,' not felt. It is very rare that an earthquake in Yellowstone is strong enough to cause damage. Earthquakes can cause shifts in circulation and temperature changes to the plumbing system, which can change the structure of certain geysers or springs.
Earthquakes keep the geysers active.
The geysers will change. It's guaranteed because it's guaranteed there are going to be more earthquakes. If there were no earthquakes, the geysers would clog themselves up. But geysers aren't forever. Geologically, they're very fragile, very short-lived things.