Caldera Chronicles

Caldera Chronicles is a weekly article written by U.S. Geological Survey Yellowstone Volcano Observatory scientists and colleagues.


Filter Total Items: 218
Date published: April 6, 2020

What's with all these earthquakes? And will they affect Yellowstone?

First, there was the March 18, 2020, magnitude 5.7 (M5.7) earthquake near Salt Lake City. And then there was the M6.5 earthquake in central Idaho on March 31. What's with all of these quakes? And will they affect Yellowstone? 

Date published: March 30, 2020

How a thermophilic bacterium from a Yellowstone hot spring is helping the fight against the COVID-19 pandemic.

We can look back to research describing microbes in Yellowstone hot springs to see how fundamental explorative scientific research is an amazing benefit to humankind.

Date published: March 23, 2020

Geysers—what exactly are they made of?

Today, we shed light on what makes up geyser cones.

Date published: March 16, 2020

Gassy precursors for geyser eruptions?

Our search for eruption precursors focused on gas emissions at Steamboat Geyser. We made repeated measurements over time to look for sudden changes in gas emissions preceding a geyser eruption.

Date published: March 9, 2020

What's Going on Under Norris Geyser Basin?

If there were an Olympic medal for hydrothermal systems, Norris Geyser Basin would bring home the gold.

Date published: March 2, 2020

The roads less traveled in the Greater Yellowstone Ecosystem

What values do these road-less areas offer for science, for recreation, for wildlife? As public land owners, we all shape the future of the  Greater Yellowstone Ecosystem and other wild landscapes.

Date published: February 24, 2020

Caldera systems—a worldwide family that is more than just Yellowstone!

Did you know that there are similar caldera systems spread across the globe? And many of these are far more volcanically active than Yellowstone!

Date published: February 17, 2020

Yellowstone's shadow

The lack of any basalt in Yellowstone caldera—the existence of a magmatic "shadow"—is good evidence that the rhyolite magma chamber is still at least partially molten.

Date published: February 10, 2020

Seeing Yellowstone in stereo: The importance of monitoring Yellowstone's thermal areas from aircraft photos

Images acquired using inexpensive cameras from airborne platforms can be used to monitor surface changes in thermal areas over a variety of spatial and temporal scales.

Date published: February 3, 2020

Yellowstone's rock record—rolling through much of Earth's time

 Yellowstone National Park contains rock formations that span over half the Earth's 4.6-billion-year lifespan! 

Date published: January 27, 2020

The December 2019 hydrothermal explosion at White Island (Whakaari), New Zealand, and its lessons for Yellowstone

Hydrothermal explosions are the most likely of Yellowstone's various volcanic hazards, and the potential for additional future explosions is not insignificant.

Date published: January 20, 2020

Earthquakes in and around Yellowstone: How often do they occur?

The U.S. Geological Survey produces seismic hazard maps for the United States and the 2018 nationwide long-term assessment shows that the Yellowstone region has some of the highest seismic hazard values in the Intermountain West.