USGS/Cascades Volcano Observatory, Vancouver, Washington
Mount Hood, Oregon
Earthquakes and Seismicity
- Current Activity
- Pacific Northwest Seismic Network (PNSN)
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Pacific Northwest Seismic Network (PNSN)
-- Information, Maps, includes link to the University of Washington PNSN Website
Earthquakes commonly provide the earliest warning of volcanic unrest, and earthquake swarms immediately precede most volcanic eruptions. Information on Pacific Northwest earthquake activity and hazards is provided by the Pacific Northwest Seismic Network (PNSN) which operates seismograph stations and locates earthquakes in Washington and Oregon. The PNSN is operated jointly by the University of Washington, the University of Oregon, and Oregon State University, and is funded by the U.S. Geological Survey, the Department of Energy, and the State of Washington. The PNSN is based at the Geophysics Program of the University of Washington in Seattle, and is a member of the Council of the National Seismic Systems (CNSS), a group of regional network operators who cooperate to locate and catalog earthquakes throughout the United States. -- Wright and Pierson, 1992; and the University of Washington's Geophysics Program
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2003, Seismic Monitoring at Cascade Volcanic Centers - The Big Picture
Informational text and shaded relief map
showing locations of all PNSN/NCSN seismic stations operating in the Pacific Northwest as of November, 2003. Map includes the 13 major Cascade volcanic centers.
-- Excerpt from: Moran, 2005, USGS Scientific Investigations Report 2004-5211
- Background and Information
- Graphics
- -- showing relationship between time and depth of earthquakes (quality CC or better) beneath Mount Hood. "0" depth corresponds to sealevel. -- Modified from University of Washington's Geophysics Program
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2008
-- [Graphic,21K,InlineGIF]
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2007
-- [Graphic,21K,InlineGIF]
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2006
-- [Graphic,19K,InlineGIF]
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2005
-- [Graphic,21K,InlineGIF]
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2004
-- [Graphic,21K,InlineGIF]
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2003
-- [Graphic,21K,InlineGIF]
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2002
-- [Graphic,21K,InlineGIF]
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2001
-- [Graphic,20K,InlineGIF]
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2000
-- [Graphic,20K,InlineGIF]
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1999
-- [Graphic,20K,InlineGIF]
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1998
-- [Graphic,15K,InlineGIF]
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1998-2007
-- [Graphic,25K,InlineGIF]
-
1990-1999
-- [Graphic,25K,InlineGIF]
- Maps and Graphics
- Items of Interest
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Approximate event counts, by event type at five Cascade volcanoes, 1989-90
-- includes Mount Hood
-- Jonientz-Trisler, Myers, and Power, 1994, IN: USGS Bulletin 2047
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Current Activity Menu
-- includes seismicity
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Current Seismicity - Link
-- Link courtesy
University of Washington Pacific Northwest Seismic Network
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DESCRIPTION: Mount Hood Seismic Network
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July 1980 Mt. Hood earthquake swarm
-- Rite and Iyer, 1981, USGS Open-File Report 81-48
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Maps and Graphics - Mount Hood
-- includes Seismicity
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Mount Hood Seismic Network - Description
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Pacific Northwest Seismic Network (PNSN)
-- Information and links
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Pacific Northwest Seismic Network - Oregon and Southern Washington - 1998 Map
-- [Map,30K,InlineGIF]
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Pacific Northwest Seismic Network - Washington and Oregon - 1998 Map
-- [Map,40K,InlineGIF]
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Pacific Northwest Seismic Network - Washington and Oregon - 2003 Information and Map
-- Moran, 2005, USGS Scientific Investigations Report 2004-5211
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Seismic Activity June 2002
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Seismic Activity September 2001
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Seismic Activity January 2001
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Seismic Activity January 1999
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Seismic Activity February 1998
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Seismic Activity 1977 - 1996
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Seismic Monitoring at Cascade Volcanic Centers, 2004 -- Status and Recommendations
-- Moran, 2005, USGS Scientific Investigations Report 2004-5211
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Seismic studies at the Mt. Hood Volcano, northern Cascade Range, Oregon
-- Green, et.al., 1979, USGS Open-File Report 79-1261
- General Earthquake and Seismic Information
- Useful Links
Return to:
[Mount Hood Volcano Menu]
[Mount Hood Monitoring Menu]
[Cascade Range Earthquakes and Seismicity Menu]
[Earthquakes and Seismicity Menu]
URL for CVO HomePage is:
<http://vulcan.wr.usgs.gov/home.html>
URL for this page is:
<http://vulcan.wr.usgs.gov/Volcanoes/Hood/Seismicity/framework.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
04/01/09, Lyn Topinka