USGS/Cascades Volcano Observatory, Vancouver, Washington
News and Current Events,
Information Announcements, and
2012 'Volcano Explorers' school videoconference program.
This partnership of staff at OSPI ESD-112, the Mount St. Helens Institute, and the US Geological
Survey brings live, interactive video presentations by scientists to students across the country.
For information about 2012 programming, visit:
2012 Mount Rainier Teachers Workshop
Living with a Volcano in your Backyard -- Mount Rainier 2012 Teachers Workshop
-- Come spend a lovely few summer days at the Park with U.S. Geological Survey scientists and Park
educators. The workshop will be a mix of content, curriculum activities, and field experiences. This
workshop is designed for middle school teachers who teach about volcanoes, volcanic processes, products,
and hazards. The interdisciplinary curriculum focuses on the science of Cascade Volcanoes in general
and the specifics of Mount Rainier volcano and the hazards associated with living in its shadow.
Participating teachers will receive curriculum materials and additional resources to use with their
2011 News Releases
Volcanic versus anthropogenic carbon dioxide
The ABC online story
"Humans dwarf volcanoes for CO2 emissions"
provides a follow up response to USGS Emeritus Terry Gerlach's paper
"Volcanic versus anthropogenic carbon dioxide"
recently published in Eos. The ABC article discusses why this myth persists,
compares human and volcano CO2
emissions, includes several quotes
from Dr. Terrence Gerlach, and provides links to the USGS Cascades
Volcano Observatory and the Gerlach's journal article printed in Eos.
Mount Rainier 2.3 quake and swarm, September 20, 2009
A swarm of small earthquakes started on the morning of September 20, 2009, at about 09:00 PDT beneath
Mount Rainier. To date, the swarm has consisted of hundreds of earthquakes, most occurring on Sept. 20.
Most locate at a depth of 2-3 km (1-2 miles) beneath the northeast flank of the volcanic edifice,
centered ~1 km (0.5 miles) northeast of the summit. The largest event was a M 2.3 on Sept. 20. As of
Sept. 23 swarm events continue, but at a greatly reduced rate since early on September 22. Seismic
swarms are concentrations of earthquakes that typically are not initiated with a mainshock, and are
common features at volcanoes. The vast majority of volcanic swarms are not associated with eruptive
activity. Rainier itself has had several such swarms: in the past 7 years there have been similar days-long
swarms in 2002, 2004, and 2007, two of which (2002 and 2004 )included M 3.2 earthquakes. The Sept. 20
swarm has produced the largest number of events of any swarm at Rainier since seismic monitoring began
over two decades ago, so we will continue to closely monitor seismicity and other geophysical parameters
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02/07/11, Lyn Topinka
12/08/11, Michael Randall