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Plot of size versus annual probability for hydrothermal explosion craters in Yellowstone National Park. The line is a model based on the energy required to form a crater of a specific size, and it is fit to known hydrothermal explosion craters in Yellowstone National Park.
Plot of size versus annual probability for hydrothermal explosion craters in Yellowstone National Park. The line is a model based on the energy required to form a crater of a specific size, and it is fit to known hydrothermal explosion craters in Yellowstone National Park.
Graph showing explosions recorded at Black Diamond Pool in Biscuit Basin, Yellowstone National Park, during 2006 through 2016. Confirmed events refer to eruptions that were witnessed, recorded by temperature loggers, or inferred from their aftermath. Unconfirmed events refer to eruptions that were questionable or might have been misattributed to Black Diamond.
Graph showing explosions recorded at Black Diamond Pool in Biscuit Basin, Yellowstone National Park, during 2006 through 2016. Confirmed events refer to eruptions that were witnessed, recorded by temperature loggers, or inferred from their aftermath. Unconfirmed events refer to eruptions that were questionable or might have been misattributed to Black Diamond.
(A) Photomicrograph of a quartz-hosted embayment from the Mesa Falls Tuff. “MI” indicates a glassy inclusion of melt within the crystal. (B) Thickness (in centimeters) and extent of the Mesa Falls ash flow deposit (pink areas) and its source, Henrys Fork Caldera (dashed line). Figure by Kenneth Befus, University of Texas at Austin.
(A) Photomicrograph of a quartz-hosted embayment from the Mesa Falls Tuff. “MI” indicates a glassy inclusion of melt within the crystal. (B) Thickness (in centimeters) and extent of the Mesa Falls ash flow deposit (pink areas) and its source, Henrys Fork Caldera (dashed line). Figure by Kenneth Befus, University of Texas at Austin.
(A) Water distribution in a quartz-hosted embayment measured with synchrotron Fourier Transform Infrared spectroscopy. Warmer colors indicate higher concentrations of water. Dashed line shows a transect of water content that is modeled in panel (B) to indicate that the emplacement temperature of the ash flow deposit must have been about 500 °C (930 °F).
(A) Water distribution in a quartz-hosted embayment measured with synchrotron Fourier Transform Infrared spectroscopy. Warmer colors indicate higher concentrations of water. Dashed line shows a transect of water content that is modeled in panel (B) to indicate that the emplacement temperature of the ash flow deposit must have been about 500 °C (930 °F).
This boulder is the largest that is confirmed to have been part of the July 23, 2024, hydrothermal explosion from Black Diamond Pool, Biscuit Basin, Yellowstone National Park. The tape measure is 50 centimeters (20 inches) long. Black Diamond Pool and a boardwalk are in the background.
This boulder is the largest that is confirmed to have been part of the July 23, 2024, hydrothermal explosion from Black Diamond Pool, Biscuit Basin, Yellowstone National Park. The tape measure is 50 centimeters (20 inches) long. Black Diamond Pool and a boardwalk are in the background.
High-resolution Planet satellite image of Biscuit Basin, Yellowstone National Park, from July 24, 2024. The image shows changes that occurred as a result of the July 23, 2024, hydrothermal explosion from Black Diamond Pool, including deposition of material in the vicinity of the pool and a plume of discolored water in the Forehole River.
High-resolution Planet satellite image of Biscuit Basin, Yellowstone National Park, from July 24, 2024. The image shows changes that occurred as a result of the July 23, 2024, hydrothermal explosion from Black Diamond Pool, including deposition of material in the vicinity of the pool and a plume of discolored water in the Forehole River.
In this month's video, we update you on the Biscuit Basin explosion on July 23, 2024, and discuss the 65th anniversary of the M7.3 Hegben Lake earthquake.
In this month's video, we update you on the Biscuit Basin explosion on July 23, 2024, and discuss the 65th anniversary of the M7.3 Hegben Lake earthquake.
Volcanic ash in Kansas? It's true there's thick deposits there, but where are the source volcanoes? Geologists began puzzling over this in the late 1800s when these deposits were first recognized.
Volcanic ash in Kansas? It's true there's thick deposits there, but where are the source volcanoes? Geologists began puzzling over this in the late 1800s when these deposits were first recognized.
If a geyser erupts and no one is there to hear it, does it make a sound? Of course it does, and now we can hear it no matter when it happens thanks to a new monitoring station in Yellowstone National Park.
If a geyser erupts and no one is there to hear it, does it make a sound? Of course it does, and now we can hear it no matter when it happens thanks to a new monitoring station in Yellowstone National Park.
Steamboat Geyser is the tallest geyser in the world. It has been putting on a show the last few years for visitors at Yellowstone National Park with a record number of water eruptions, 48 eruptions each in 2019 and 2020. But it's only had eight eruptions in 2023. Is Steamboat losing steam?
Steamboat Geyser is the tallest geyser in the world. It has been putting on a show the last few years for visitors at Yellowstone National Park with a record number of water eruptions, 48 eruptions each in 2019 and 2020. But it's only had eight eruptions in 2023. Is Steamboat losing steam?
Lava flows are one of the coolest (or maybe hottest!) features about volcanoes, but what would a lava flow look like if you could peel away the surface and take a peek underneath?
Lava flows are one of the coolest (or maybe hottest!) features about volcanoes, but what would a lava flow look like if you could peel away the surface and take a peek underneath?
What geologic hazard is most likely to occur in the Yellowstone region on human timescales?
What geologic hazard is most likely to occur in the Yellowstone region on human timescales?
Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
Live view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.