USGS/Cascades Volcano Observatory, Vancouver, Washington

Mount Hood, Oregon
Earthquakes and Seismicity

Current Activity
- Link to: Current Seismicity -- Link courtesy University of Washington Pacific Northwest Seismic Network
- Cascade Range Current Activity Updates -- includes Mount Hood
- Current Activity Menu
Pacific Northwest Seismic Network (PNSN)
- 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
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
Terminology
- Earthquake Terminology
Background and Information
- DESCRIPTION: Mount Hood Seismic Network
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
- 2007 -- [Graphic,21K,InlineGIF]
- 2006 -- [Graphic,19K,InlineGIF]
- 2005 -- [Graphic,21K,InlineGIF]
- 2004 -- [Graphic,21K,InlineGIF]
- 2003 -- [Graphic,21K,InlineGIF]
- 2002 -- [Graphic,21K,InlineGIF]
- 2001 -- [Graphic,20K,InlineGIF]
- 2000 -- [Graphic,20K,InlineGIF]
- 1999 -- [Graphic,20K,InlineGIF]
- 1998 -- [Graphic,15K,InlineGIF]
- 1998-2007 -- [Graphic,25K,InlineGIF]
- 1990-1999 -- [Graphic,25K,InlineGIF]
Maps and Graphics
- Maps and Graphics - Mount Hood -- includes Seismicity
- Maps and Graphics - Earthquakes and Seismicity -- includes Oregon and Mount Hood
Useful Links
- Useful Links - Oregon -- includes Seismicity
Items of Interest
- 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
- Cascade Range Earthquakes and Seismicity - Description -- includes Oregon Seismicity
- Current Activity Menu -- includes seismicity
- Current Seismicity - Link -- Link courtesy University of Washington Pacific Northwest Seismic Network
- DESCRIPTION: Mount Hood Seismic Network
- Earthquake Terminology
- Earthquakes and Seismicity - Menu -- General information about earthquakes and seismicity
- Graphics, Yearly Seismicity -- includes Mount St. Helens, Mount Rainier, and Mount Hood
- July 1980 Mt. Hood earthquake swarm -- Rite and Iyer, 1981, USGS Open-File Report 81-48
- Maps and Graphics - Earthquakes and Seismicity -- includes Oregon and Mount Hood
- Maps and Graphics - Mount Hood -- includes Seismicity
- Mount Hood Seismic Network - Description
- Oregon Earthquakes and Seismicity - Description
- Pacific Northwest Seismic Network (PNSN) -- Information, Maps, includes link to the University of Washington PNSN Website
- Pacific Northwest Seismic Network - Oregon and Southern Washington - Map -- [Map,30K,InlineGIF] -- 1999
- Pacific Northwest Seismic Network - Washington and Oregon - Map -- [Map,40K,InlineGIF] -- 1998
- Seismic Activity June 2002
- Seismic Activity September 2001
- Seismic Activity January 2001
- Seismic Activity January 1999
- Seismic Activity February 1998
- Seismic Activity 1977 - 1996
- Seismic Monitoring at Cascade Volcanic Centers, 2004 -- Status and Recommendations -- Moran, 2005, USGS Scientific Investigations Report 2004-5211
- Seismic studies at the Mt. Hood Volcano, northern Cascade Range, Oregon -- Green, et.al., 1979, USGS Open-File Report 79-1261
- Terminology - Earthquakes and Seismicity

Other Menus of Interest

Mount Hood Menu -- CVO Menu
Mount Hood Hazards Menu -- CVO Menu
Mount Hood Monitoring Menu -- CVO Menu
Cascade Range Earthquakes and Seismicity Menu -- CVO Menu
Earthquakes and Seismicity Menu -- CVO Menu
Volcano and Hydrologic Monitoring Menu -- CVO 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>
02/12/08, Lyn Topinka

Mount Hood, Oregon Earthquakes and Seismicity

Mount Hood, Oregon
Earthquakes and Seismicity