Yellowstone Volcano Observatory

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Filter Total Items: 245
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.

Date published: December 2, 2019

Yellowstone's migrating bison manipulate springtime green-up

On a typical June day in Yellowstone National Park, it’s not unusual to see hundreds of bison grazing in the Lamar Valley. The herds appear to aimlessly move back and forth through meadows threaded by a winding river, just passive figures in an idyllic scene. But as it turns out, that’s far from the full picture.

Date published: November 25, 2019

The 2017 YVO annual report—a new product of the Yellowstone Volcano Observatory!

Last week, the Yellowstone Volcano Observatory 2017 Annual Report was published online.

Date published: November 18, 2019

Why do we monitor carbon dioxide emissions in Yellowstone, and how?

The carbon dioxide (CO2) emitted from the Yellowstone magmatic-hydrothermal system has a number of characteristics that make it an important gas to monitor, including its great abundance, partial magmatic origin, and that it can provide information on the depth of the magma beneath the surface.

Date published: November 11, 2019

What is an earthquake swarm?

Yellowstone, like many regions with hydrothermal activity, often exhibits earthquake swarms. But how do we define an earthquake swarm and distinguish it from other seismic activity? And what is the cause of such swarms

Date published: November 4, 2019

So many scientific sensors in Yellowstone! So… Where are they?

Yellowstone is one of the best instrumented volcanoes in the world. There are several dozen GPS stations, seismometers, temperature sensors, river-monitoring sensors, tiltmeters, and strainmeters in the Park alone—and that number doesn't include the many sensors outside the Park!

Date published: October 28, 2019

Talking about talking about Yellowstone (and geohazards)

Three YVO scientist communicators joined up with a university social scientist and earthquake-science communicator to offer a short course on Communicating Geohazards. 

Date published: October 21, 2019

Journey into the roots of a hydrothermal vent system!

Multiple hydrothermal breccia pipes are exposed along the northern and western shores of Yellowstone Lake and provide clues into the shallow roots of the active vent systems. 

Date published: October 14, 2019

Part-time GPS – What's Up With That?

The backbone of Yellowstone's ground-based monitoring network consists of seismic stations, which detect earthquakes, and GPS (Global Positioning System) receivers, which track ground motion.