1 million years ago and created the Island Park Caldera. Geological agencies consistently emphasize that the annual probability of a super-eruption is extremely low, estimated at roughly 1 in 730,000.
Yellowstone Supervolcano Seismic Activity and Current Geological Monitoring
The more immediate geological hazards stem from local seismic activity and hydrothermal events rather than a bulk eruption. The surface of the caldera rises and falls in response to subterranean movements of magma and hydrothermal fluids.
Current Geological Activity and Monitoring Despite its violent history, the Yellowstone supervolcano remains an active system, though not currently on the verge of eruption. The system is not a single pocket of molten rock but a complex series of zones containing magma and hot fluids.
Yellowstone Supervolcano Seismic Activity and Current Monitoring
This classification requires an eruption to eject more than 1,000 cubic kilometers of material into the atmosphere. The first, the Huckleberry Ridge eruption, occurred approximately 2.
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