The geyser cones of Yellowstone are made up of material called sinter — a form of silica precipitated from hot water. When looking at the sinter under a powerful microscope, strange forms are revealed that are related to some of the earliest life forms on Earth.
Yellowstone Lake measures about 20 miles long and 14 miles wide.
Selected hydrothermal features at Yellowstone National Park have data loggers that capture geyser eruption times. A systematic analysis of these data can reveal variations in geyser activity over time and between different geyser basins.
Visitors to Yellowstone National Park ask a lot of questions. So how do park rangers answer when they are asked, “Where is the volcano?”
Small hydrothermal explosions — steam blasts — are common at Yellowstone National Park, occurring every year or two. Most happen in the backcountry and are not observed by people. In 1989, however, Porkchop Geyser blew up right in front of several observers on an otherwise sunny September afternoon.
Yellowstone Volcano Observatory scientists investigate many aspects of the Yellowstone volcanic system, including the incredible geysers that are the highlight of any visit to the park. After witnessing a geyser eruption, many visitors begin to wonder about some aspects of these incredible phenomena. One question — “how tall was that?” — can be answered by anybody with a few simple tools.
Interested in knowing more about Yellowstone geyser, seismic and deformation activity in 2020? How about the results of research conducted by the Yellowstone Volcano Observatory? Look no further — the 2020 Yellowstone Volcano Observatory annual report is now online.
For Yellowstone science aficionados seeking updates on all things tectonic, volcanic and explosive, the Yellowstone Volcano Observatory has published its 2020 annual report.
Steamboat Geyser has been wowing visitors to Yellowstone National Park since March 2018. Seismic studies of the geyser and nearby Cistern Spring are now revealing details of the hydrothermal plumbing system that would not otherwise be known, possibly explaining why the geyser eruptions are the tallest in the world.
About 3,800 years ago Yellowstone National Park’s Lower Geyser Basin underwent a significant environmental change.
Yellowstone hosts thousands of thermal features which have diverse chemistries and origins. The most iconic features, like Old Faithful, have neutral to alkaline pH. Some Yellowstone features, however, can be acidic enough to break down the very rock that hosts them.
The tallest active geyser in the world has been erupting at a record pace since March 2018. Why are eruptions so energetic, what influences the intervals between eruptions, and why did Steamboat reactivate in the first place?
Although 2020 may not have been a great year for many of us, it was a pretty interesting year in Yellowstone National Park. With this first Yellowstone Caldera Chronicles article of the new year, let’s take the traditional look back at what happened in Yellowstone during the previous 12 months.
The largest geyser in Yellowstone National Park has been more active in the past two years than ever before.
Cooking chickens in a hot spring at Yellowstone National Park in Wyoming landed three people in hot water.
A swimming pool? At Old Faithful? Sounds crazy, but for nearly 40 years in the first half of the 20th century there was a geyser-heated bathhouse right next to the most iconic geyser in the world.
A team of scientists and storytellers will soon be creating futuristic murals to help Yellowstone National Park's visitors understand what the park will look like late this century.
Old Faithful is the most famous geyser in the world, but who named the iconic feature? And how does the current frequency of its eruptions compare to when it was first described?
A lightning-ignited wildfire was reported Saturday in Yellowstone National Park about 3 miles south of Old Faithful.
It’s a common misconception that all geysers and hot springs in Yellowstone are acidic. Some are, but the water that comes out of many of Yellowstone’s most iconic features, like Old Faithful and Grand Prismatic Spring, is actually basic. Why?
Thermal features are dangerous, and not all have been photographed diligently throughout the decades. Scientists have developed a kind of 3D photography to accurately capture the features.
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Dakota Churchill, physical scientist with the U.S. Geological Survey and the University of California, Berkeley; Michael Manga, professor at the University of California, Berkeley; Shaul Hurwitz, research hydrologist with the USGS; Joe Licciardi, professor at the University of New Hampshire; and Jim Paces, research geologist at the USGS.
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Annie Carlson, research coordinator at the Yellowstone Center for Resources, Yellowstone National Park.