Yellowstone Volcano Observatory


Filter Total Items: 246
Date published: January 1, 2018

Yellowstone – the year 2017 in review

Welcome to the inaugural issue of "Yellowstone Caldera Chronicles," a new weekly column of the Yellowstone Volcano Observatory (YVO). Each Monday on the YVO homepage, we'll post a new article that covers a different topic, including geology, history, current activity, and other subjects. The articles will be written by YVO scientists...

Date published: July 5, 2017

Return of the Yellowstone Grizzly Bear

From the journals of Lewis & Clark, April 13, 1805 (in the vicinity of Pouch Point Recreation Area - 16 miles south of New Town, North Dakota):

Date published: June 21, 2017

Red Dye Study Will Examine Water Flow in Yellowstone River near Glendive, Montana

Reporters: If interested in being notified when the study date is chosen, please contact Jennifer or Susannah.

Date published: January 1, 2017

Taking a Closer Look at a Yellowstone Earthquake Swarm

When earthquake swarms happen at Yellowstone, we receive a lot of questions about whether the volcano is headed toward eruption. The swarm in June 2017 garnered the same reaction, so let's take a look back at what we learned from the previous swarm in 2010, about 20 km SSE of the June activity.

Date published: May 16, 2016

Study Shows Pathways of Disease Transmission Between Elk, Bison and Cattle in the Greater Yellowstone Area

The U.S. Geological Survey and its partners have shown how brucellosis has impacted cattle, bison and elk in the greater Yellowstone area.

Date published: March 15, 2016

Dissolved gas helps Yellowstone's geysers erupt

Most models of geyser eruptions start with a simple assumption: eruptions occur as liquid water boils to steam. While that is largely true, if the water includes dissolved gas, geyser eruptions can occur at temperatures lower than boiling. USGS scientist Shaul Hurwitz and colleagues published a paper discussing this phenomenon in the ...

Date published: January 13, 2016

Finding the Age of Yellowstone's Geysers and Hot Springs

USGS scientists often determine the age of volcanic rocks with dating techniques that involve radioactive decay of elements like uranium and argon.

Date published: October 30, 2015

Genetic Study Confirms Growth of Yellowstone Grizzly Bear Population

BOZEMAN, Mont. – Genetic data show the grizzly bear population in the Greater Yellowstone Ecosystem has grown since the 1980s with no loss in genetic diversity, according to a report by the Interagency Grizzly Bear Study Team.

Date published: April 23, 2015

Using Seismic Waves to Image the Yellowstone Magma Storage Region

How do we know what's beneath Yellowstone, and how can we image the shallow magma?

Date published: February 11, 2015

Effects of Water-Use Development on Yellowstone River Streamflow Analyzed

A new fact sheet published by the U.S. Geological Survey describes the cumulative hydrologic effects of water-resource development in the Yellowstone River.