2012 IRIS Workshop
Correlation Between Repeating Earthquake Activity and Weather at Mount Rainier Volcano
Kate Allstadt: University of Washington, Steve Malone: University of Washington, John Vidale: University of Washington
Small repeating earthquakes with regular recurrence intervals occur often at Mount Rainier volcano but escaped detection until recently. We discovered that their appearance correlates with big winter precipitation events, as shown above. They are generated by glaciers reacting to snow loading, and are not related to volcanic activity, our original concern. We are now studying how such small loads can act on glaciers so quickly to drive motion. Weather data recorded at Paradise Visitors Center.
Full-resolution graphics file in original format: 0013.png
Acknoweldgements: Pacific Northwest Seismic Network, Cascade Volcano Observatory
Keywords: repeating_earthquakes, volcano_seismology, glacierquakes
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