Most volcanic systems that have a
Again, the last eruption was 0.64 million years ago, implying that we are still about 90,000 years away from the time when we might consider calling Yellowstone overdue for another caldera-forming eruption.
What would happen if a "supervolcano" eruption occurred again at Yellowstone? If another large, caldera-forming eruption were to occur at Yellowstone, its effects would be worldwide. Such a giant eruption would have regional effects such as falling ash and short-term (years to decades) changes to global climate.
However, recent studies find that the speed at which the volcano can fill its magma chamber and erupt is on the order of a few decades. That means Yellowstone supervolcano could go from its usual activity like today to erupting in 2030′s.
So if Yellowstone were to erupt again (which it may never do, mind you), it is possible that the eruption could be caused by a similar movement of magma from deeper in the crust to the shallowest magma chamber.
The eruption could be expected to kill as many as 90,000 people immediately and spread a 10-foot (3-meter) layer of molten ash as far as 1,000 miles (1,609 kilometers) from the park.
There are about 20 known supervolcanoes on Earth - including Lake Toba in Indonesia, Lake Taupo in New Zealand, and the somewhat smaller Phlegraean Fields near Naples, Italy. Super-eruptions occur rarely - only once every 100,000 years on average.
Answer and Explanation: No, Yellowstone does not contain the biggest supervolcano in the world. The largest supervolcano is the Wah Wah Springs caldera in Utah, which once exploded with over 30 times the pyroclastic debris as Yellowstone's largest eruption.
The biggest supervolcano on Earth was discovered in 2013: the Tamu Massif, with a 4 km height and a 640 km width, a submarine shield volcano located in the Pacific Ocean, east of Japan.
Hundreds of articles have been written about the largest volcanic eruption in recorded history, at Indonesia's Mt. Tambora just over 200 years ago...
The most recent supervolcanic eruption on Earth occurred 27,000 years ago at Taupo located at the center of New Zealand's north island.
The Yellowstone supervolcano is supposed to erupt around 2030, and will kill countless people, including wiping out the US.
Q: Is the volcano dormant or extinct or still active? A: The Yellowstone Volcano is still active. Evidence for the activity of the Yellowstone Volcano are the 1,000 to 3,000 earthquakes per year, active ground deformation, and the over 10,000 thermal features found in Yellowstone.
How big were the super eruptions? At least 150,000 km³ of material erupted from the northern NSW volcanoes over four million years. This makes them similar to the supervolcanoes of Yellowstone in the United States and Taupo in New Zealand.
Seventy-five percent of Earth's volcanoes—more than 450 volcanoes—are located along the Ring of Fire. Ninety percent of Earth's earthquakes occur along its path, including the planet's most violent and dramatic seismic events.
The Ring of Fire is home to 75% of the world's volcanoes and 90% of its earthquakes. The Ring of Fire is a roughly 25,000-mile chain of volcanoes and seismically active sites that outline the Pacific Ocean.
Geologists believe the ash from the eruption would encircle the globe in as little as 48 hours, and make temperatures drop by a minimum of two degrees celsius for as long as 20 years. The cooling of the Earth could be catastrophic for the planet's fragile ecosystem, kicking off a chain reaction of extinctions.
A barometer at the Batavia gasworks (100 miles away from Krakatoa) registered the ensuing spike in pressure at over 2.5 inches of mercury. That converts to over 172 decibels of sound pressure, an unimaginably loud noise. To put that in context, if you were operating a jackhammer you'd be subject to about 100 decibels.
The reality is that there's next to no chance of a California quake triggering a Yellowstone eruption. Even the people at the Yellowstone Volcano Observatory who watch the caldera closer than anyone have said that the earthquakes measured at Yellowstone itself are not even predictive of an imminent eruption.
The Yellowstone caldera was created by a massive volcanic eruption approximately 631,000 years ago. Later lava flows filled in much of the caldera, now it is 30 x 45 miles.
To date there have been no successful efforts to start, stop or reduce a volcanic eruption; however, the ideas exists and discussion is underway.