Monday, August 3, 2009 15:54 MDT (Monday, August 3, 2009 21:54 UTC)
YELLOWSTONE VOLCANO (CAVW#1205-01-)
44.43°N 110.67°W, Summit Elevation 9203 ft (2805 m)
Volcano Alert Level: NORMAL
Aviation Color Code: GREEN
July 2009 Yellowstone Seismicity Summary
During the month of July 2009, 98 earthquakes were located in the Yellowstone region. The largest event was a magnitude 2.7 on July 8 at 9:08 AM MDT, located about 5 miles south southeast of Fishing Bridge, WY. The swarm that began on June 30th continued through July 3. This small swarm was located about 15 miles east northeast of West Yellowstone, MT and totaled 37 earthquakes with magnitudes ranging from 3.3 to -0.2.
Earthquake activity in the Yellowstone region is at relatively normal background levels.
Ground Deformation Summary: Through July 2009, continuous GPS data show that uplift of the Yellowstone Caldera has slowed but may be continuing. The WLWY station, located in the northeastern part of the caldera, has undergone a total of ~23 cm of uplift since mid-2004. Its record can be found at:
http://pboweb.unavco.org/shared/scripts/stations/?checkkey=WLWY&sec=timeseries_plots×eries=raw
The currently observed reduction in uplift rate may be related to seasonal changes related to snowmelt and groundwater recharge. In several of the past 5 years, such changes have caused decreased uplift or slight subsidence, but were followed later in the year by continued uplift. The general uplift of the Yellowstone caldera is of scientific importance and will continue to be monitored closely by YVO staff.
An article on the current uplift episode at Yellowstone and discussion of long-term ground deformation at Yellowstone and elsewhere can be found at: http://volcanoes.usgs.gov/yvo/publications/2007/upsanddowns.php
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The Yellowstone Volcano Observatory (YVO) is a partnership of the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
The Yellowstone Volcano Observatory (YVO) was created as a partnership among the U.S. Geological Survey (USGS), Yellowstone National Park, and University of Utah to strengthen the long-term monitoring of volcanic and earthquake unrest in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
Features
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Recovery Funding for Yellowstone and Other Volcano Observatories to Improve Monitoring and Public Safety
We are pleased to announce that YVO will receive $950,000 in USGS recovery (ARRA) funds. The funds will be used to upgrade seismic and other monitoring systems within Yellowstone National Park and to create new software tools, alarming capabilities and display systems for our partners and collaborating state agencies. For more information, please see the Recovery Funding for Yellowstone and Other Volcano Observatories to Improve Monitoring and Public Safety press release.
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New Videos on Yellowstone
Three new unscripted interviews with YVO Scientist-in-Charge, Jake Lowenstern.
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Yellowstone Lake Swarm
Summary of Dec 08 - Jan 09 Yellowstone Lake Earthquake Swarm.
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Earthquake Data
Access Yellowstone earthquake information and data.
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Frequently Asked Questions
Check out answers to frequently asked questions.
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Features Archive …