There’s also information about research results and discoveries, such as the new thermal area near Tern Lake in 2018. YVO has provided annual reports since 2017 that detail several topics, including ground deformation trends, earthquake activity and upgrades to its monitoring networks. "Additional work is needed to sort out the eruption’s history.YELLOWSTONE NATIONAL PARK - Scientists with the Yellowstone Volcano Observatory (YVO) recently released their report of observations and discoveries made over the last year and have come across new evidence that suggests that the last major eruption at Yellowstone 631,000 years ago "was much more complex than previously thought" and more work will need to be completed to learn more details about the eruption’s history. "This discovery implies that the eruption was much more complex than previously thought," the report says. However, Montana State University geologists identified several new units of the Lava Creek Tuff while mapping the rocks on the Sour Creek dome on the eastern side of the Yellowstone Caldera. Scientists said the ash deposit that resulted from the explosion, called the Lava Creek Tuff, was initially believed to be two geological subunits, according to a report. The report also details information uncovered by YVO scientists that are changing how they think about the last major eruption at Yellowstone 631,000 years ago. YELLOWSTONE'S SURROUNDING TOWNS RELY ON WORLD TRAVELERS TO VISIT ONE OF EARTH'S MOST BEAUTIFUL PLACES The flooding was so intense that the YVO said monitoring stations recorded seismic noise associated with the floodwaters. The north and northeast entrance roads remained closed for the entire summer, with the north entrance not being reopened until the end of October – more than four months after the flooding event. That was interrupted during the summer months by a pause in uplift as the ground swelled slightly due to a recharge in groundwater from snowmelt.Īccording to the National Park Service, calderas are collapse features that form during large-volume volcanic eruptions when the underlying magma chamber is emptied and the ground above it sinks into it.Īn atmospheric river event in June rapidly melted the snowpack and led to catastrophic flooding across the Yellowstone region, leading to the closure of the entire national park. The Yellowstone Volcano Observatory 2022 Annual Report was released earlier this month, and like previous reports, it’s filled with eye-opening new research and observations.Īccording to the YVO report, 2,429 earthquakes were recorded in the Yellowstone region in 2022, the largest of which was a magnitude 4.2 that occurred on May 11.ħ THINGS TO KNOW ABOUT YELLOWSTONE NATIONAL PARKĪccording to the report, the Yellowstone Caldera subsided by 1–2 inches throughout 2022. YELLOWSTONE NATIONAL PARK - Scientists with the Yellowstone Volcano Observatory (YVO) recently released their report of observations and discoveries made over the last year and have come across new evidence that suggests that the last major eruption at Yellowstone 631,000 years ago "was much more complex than previously thought" and more work will need to be completed to learn more details about the eruption’s history.
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