California Volcano Observatory


Filter Total Items: 84
Date published: June 4, 2021

Gas sampling at Mount Shasta builds a long-term record of volcanic emissions

One of the three main ways that California Volcano Observatory scientists monitor the state’s threatening volcanoes is by sampling the gases that are released from magma deep below (in addition to monitoring seismicity and deformation).

Date published: May 12, 2021

Christina Neal to Lead USGS Volcano Science Center

ANCHORAGE, Alaska — On May 9, 2021, Christina (Tina) Neal became the new director of the U.S. Geological Survey Volcano Science Center, home of the Alaska, California, Cascades, Hawaiian and Yellowstone volcano observatories.  

Date published: April 20, 2021

New survey plumbs Mono Lake's depths for hydrothermal heat

It is very hot below the cold waters of Mono Lake, which hosts one of the youngest volcano complexes in the United States.

Date published: April 6, 2021

New electron microprobe installed at Menlo Park

On March 25th, the USGS California Volcano Observatory celebrated the delivery of a new 'baby' - our brand new electron microprobe is finally up and running!

Date published: November 2, 2020

New Geo-Narrative explores California’s exposure to volcanic hazards

The first step in mitigating volcanic risk and building community resilience to volcanic hazards is identifying what and who is in harm’s way.

Date published: May 13, 2020

Unpacking CalVO's new seismic monitoring boxes

If you've noticed any changes to the earthquake counts released in CalVO's weekly updates, don't worry - some behind-the-scenes improvements to our monitoring system have been implemented which allow us to focus on unrest specifically related to our volcanoes and volcanic regions.

Date published: April 13, 2020

Clearing up the volcanic history at Clear Lake

A group of scientists at CalVO have recently begun a new investigation of the Clear Lake Volcanic Field (CLVF), a seismically and geothermally active volcanic system located just ~150 km (93 miles) north of the San Francisco Bay Area.

Date published: March 31, 2020

Hydrologist Steve Ingebritsen retires after 40 years

Dr. Steve Ingebritsen retires this week from the USGS after a stellar career spanning four decades.

Date published: March 24, 2020

California Volcano Observatory Operations during COVID-19

California Volcano Observatory monitoring activities continue as normal; scientists and staff following precautionary safety measures.

Date published: February 3, 2020

M4.4 "Sierra Block" earthquake west of Mammoth Lakes

At 10:36:54 PST (18:36:54 UTC on) 1 February, a M4.4 earthquake occurred under McGee Mountain near Toms Place, CA, at a depth of 10 km.