Yellowstone Yearly Timeline Graphs

Data on these graphs is obtained from the Yellowstone Volcano Observatory Seismic Network, University of Utah Seismograph Stations (formerly operated by the USGS Menlo Park), accessed through the ANSS (Advanced National Seismic System) composite catalog. All times are UTC

2014 Graph Time versus Magnitude – 1,318 events to end Sept.

Yellowstone January-December 2014 Graph - click for larger image
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2013 Graph Time versus Magnitude – 1,640 events

Yellowstone January-December 2013 Graph - click for larger image
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2012 Graph Time versus Magnitude -605 events

Yellowstone January-December 2012 Graph - click for larger image
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2011 Graph Time versus Magnitude – 517 events

Yellowstone January-December 2012 Graph - click for larger image
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1985 Graph Time versus Magnitude – 1,114 events

Yellowstone January-December 1985 Graph - click for larger image

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