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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: September 19, 2019

New USGS geonarrative describes Kīlauea Volcano's 2018 events

A new USGS geonarrative provides a brief overview of recent Kīlauea eruptions, highlighting the circumstances leading up to and summarizing the 2018 events.

Date published: September 11, 2019

“Science is Amazing”: GeoGirls Explore Mount St. Helens During Outdoor Science and Technology Program

Twenty-five middle school-age GeoGirls spent five days conducting hands-on research and interacting with female scientists, educators and older students, all while learning about active volcanoes, natural hazards and modern scientific monitoring technologies below the summit of Mount St. Helens.

Date published: September 9, 2019

Photo and Video Chronology - Mauna Loa - September 8, 2019

An early morning view looking north across Moku‘āweoweo, Mauna Loa's summit caldera, from a spot near the summit cabin on the volcano's south caldera rim.

Date published: August 26, 2019

A Kīlauea Volcano First – Water Pond Found in the Summit Crater

On July 25, 2019, a helicopter pilot flying a U.S.Geological Survey mission over Kīlauea noticed an unusual green patch at the bottom of Halema‘uma‘u, the crater at the summit of the volcano.

Date published: August 22, 2019

Volcano Watch - Sub-Antarctic lava lake spied from space

Last month, the entire world celebrated the 50th anniversary of Apollo 11's triumphant flight to the moon and the first human footsteps on the surface of another planetary body on July 20, 1969. 

Date published: August 21, 2019

Water pond in Halema‘uma‘u

HVO geophysicist Jim Kauahikaua discusses the water pond in Halema‘uma‘u and what it means.

Date published: August 5, 2019

60 years since the 1959 M7.3 Hebgen Lake earthquake: its history and effects on the Yellowstone region

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Jamie Farrell, assistant research professor with the University of Utah Seismograph Stations and Chief Seismologist of the Yellowstone Volcano Observatory.

Date published: July 29, 2019

Yellowstone's icy past

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Mike Poland, geophysicist with the U.S. Geological Survey and Scientist-in-Charge of the Yellowstone Volcano Observatory.

Date published: July 25, 2019

Earthquakes in Hawai‘i

HVO seismologist Brian Shiro discusses similarities and differences between the 2018 Hawai‘i and 2019 California earthquake sequences.