Yellowstone Volcano Observatory

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Filter Total Items: 153
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.

Date published: January 13, 2020

The complicated plumbing of hot springs and steam vents in Yellowstone National Park

Exploration and sampling of Yellowstone's thermal areas indicates that Yellowstone's hot springs often have surprisingly complex plumbing systems. It is not uncommon to find hot spring pools, which have one type of chemistry, and steam vents, which have totally different chemistry, located in close proximity—or even occupying the same space! Learn what happens when these mix or overlap.

Date published: January 6, 2020

Yellowstone—the year 2019 in review

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is...

Date published: December 30, 2019

How do we know so much about Yellowstone deformation? Let's ask DZ!

Today, we'll pay homage to one of the scientists that made these discoveries: Dr. Daniel Dzurisin, who retires at the end of this week after over 43 years of service.

Date published: December 23, 2019

Science cowboys: The adventures of Yellowstone's early geologists

This preservation mandate made scientific research in YNP initially challenging to sort out—what is the balance between research and preservation, and how can you have one without the other? 

Date published: December 16, 2019

The diverse chemistry of Yellowstone's hydrothermal features

Investigations into the water chemistry of Yellowstone's geysers, hot springs, mud pots, and streams and rivers have been conducted by the U.S. Geological Survey dating back to 1888.

Date published: December 9, 2019

The Yellowstone Hotspot and Columbia River Basalts

The arrival of volcanoes in that area is geologically recent, however—volcanism associated with Yellowstone has migrated over 400 miles across southern Idaho in the past 16 million years!

Date published: December 2, 2019

The early recognition of Yellowstone's volcanic character

Looking back at early accounts of Yellowstone allows us to appreciate how our understanding has changed over time.