USGS/Cascades Volcano Observatory, Vancouver, Washington
Earthquakes and Seismicity
Maps and Graphics, etc.
-
[Graphic,20K,GIF]
Four major types of seismograms -
Tectonic, Volcanic, Surface, and Tremor
-- From: Brantley and Topinka, 1984,
Earthquake Information Bulletin
-
[Graphic,28K,GIF]
Seismograms of
Volcanic Earthquakes vs. Tectonic Earthquakes,
P, S, and Surface Waves
-- Courtesy of: Noson, et.al., 1988,
Washington State Earthquake Hazards:
Washington State Department of Natural Resources,
Washington Division of Geology and Earth Resources Information
Circular 85, p.9.,
Modified by: Topinka, USGS/CVO, 1997
-
[Map,30K,InlineGIF]
Earthquakes and Plate Tectonics
-- Earthquakes around the world for the past 5 years as of July 7, 1999.
The distribution of seismicity over the past 5 years defines boundaries
of tectonic plates.
-- "Flat" color version
-
[Map,115K,InlineGIF]
Earthquakes and Plate Tectonics
-- Earthquakes around the world for the past 5 years as of July 7, 1999.
The distribution of seismicity over the past 5 years defines boundaries
of tectonic plates.
-- "Topographic" version
-
[Map,35K,InlineGIF]
Earthquakes, Active Volcanoes, and Plate Tectonics
-
[Map,40K,InlineGIF]
University of Washington's Pacific Northwest Seismic Network
-- Modified from: University of Washington Geophysics Program, 1998,
includes seismic station location map and link to PNSN
-
[Map,30K,InlineGIF]
Oregon and Southern Washington -
University of Washington's Pacific Northwest Seismograph Network
-- Modified from: University of Washington Geophysics Program, 1999,
includes seismic station location map and link to PNSN
-
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
-
[Map,16K,InlineGIF]
Mount St. Helens -
University of Washington's Pacific Northwest Seismograph Network
-- Modified from:
University of Washington Geophysics Program, 1997
-
[Graphic,20K,InlineGIF]
Mount St. Helens Seismicity, 2007,
-- showing relationship between time and depth of earthquakes beneath
Mount St. Helens. "0" depth is referenced to 1.5 km (about 1 mile)
below the current summit of Mount St. Helens (8,363 feet above sea
level).
-- Modified from:
University of Washington's Geophysics Program
-
[Graphic,29K,InlineGIF]
Mount St. Helens Energy Release, 2007,
-- Each point represents the sum of energy released by all earthquakes in a 14 day period,
Energy is computed in 14 day time windows, every 7 days,
Strain energy is plotted in ergs1/2,
Green triangles, if shown, represent phreatic explosions,
Cyan triangles, if shown, represent dome-building eruptions, and
Red triangles, if shown, represent explosive magmatic eruptions.
-- Modified from:
University of Washington's Geophysics Program
-
[Graphic,25K,InlineGIF]
Mount St. Helens Seismicity, 1980-1998,
-- showing relationship between time and depth of earthquakes beneath
Mount St. Helens. "0" depth is referenced to 1.5 km (about 1 mile)
below the current summit of Mount St. Helens (8,363 feet above sea
level).
-- Modified from:
University of Washington's Geophysics Program
-
[Graphic,651K,InlineJPG]
Mount St. Helens Seismogram, May 18, 1980,
-- from Station CPW, 70 miles to the northwest.
- MORE Mount St. Helens
-- includes yearly seismic plots since 1995, and energy release plots since 2005, scroll down to "Seismicity"
-
[Map,13K,InlineGIF]
Mount Rainier -
University of Washington's Pacific Northwest Seismograph Network
-- Modified from:
University of Washington Geophysics Program, 1997
-
[Graphic,19K,InlineGIF]
Mount Rainier Seismicity, 2007, Time vs. Depth
-- Modified from: University of Washington Geophysics Program
-
[Graphic,25K,InlineGIF]
Mount Rainier Seismicity, 1998-2007
-- Modified from: University of Washington Geophysics Program
- MORE Mount Rainier
-- includes yearly seismic plots since 1998, scroll down to "Seismicity"
-
[Graphic,19K,InlineGIF]
Mount Hood Seismicity, 2007, Time vs. Depth
-- Modified from: University of Washington Geophysics Program
-
[Graphic,25K,InlineGIF]
Mount Hood Seismicity, 1998-2007
-- Modified from: University of Washington Geophysics Program
-
[Graphic,25K,InlineGIF]
Mount Hood Seismicity, 1990-1999, Time vs. Depth
-- Modified from: University of Washington Geophysics Program
- MORE Mount Hood
-- includes yearly seismic plots since 1998, scroll down to "Seismicity"
-
[Map,29K,InlineGIF]
Earthquake Epicenters and Magnitudes in the Crater Lake Region,
1920-1995
-- Modified from: Bacon, et.al., 1997,
USGS Open-File Report 97-487
-
-
[Graphic,25K,InlineGIF]
Crater Lake Seismicity, 1997-2007
-- Modified from: University of Washington Geophysics Program
-
[Map,18K,InlineGIF]
Yellowstone National Park
-- showing caldera rim
and location of 1959 and 1975 quakes
-- Modified from: Dzurisin, et.al., 1995,
USGS Open-File Report 95-59
Return to:
[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/Glossary/Seismicity/Graphics/framework.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
09/02/08, Lyn Topinka