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PNNL-13962.pdf

Increase in successful extraction of natural gas will lead to need for added storage. PNNL-13962.pdf. Seismicity of the Columbia Basin and Surrounding Areas as Measured by Seismographs. All earthquakes from 1969 to 2001 with Richter magnitude 3 or larger are shown.

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PNNL-13962.pdf

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  1. Increase in successful extraction of natural gas will lead to need for added storage PNNL-13962.pdf

  2. Seismicity of the Columbia Basin and Surrounding Areas as Measured by Seismographs. All earthquakes from 1969 to 2001 with Richter magnitude 3 or larger are shown. Historic Seismicity of the Columbia Basin and Surrounding Areas. Includes all earthquakes between 1850 and 1969, with a Modified Mercalli Intensity (MMI) of V or larger or a Richter magnitude of 4 or larger. PNNL-13962.pdf

  3. Questions: • With increased activity, was there a corresponding increase in the background noise? • Was there an overall increase in the amount of seismic activity associated with various projects around LIGO (above background)? washingtonclosure.com

  4. Sunday Monday Tuesday Wednesday Thursday Friday

  5. Sunday Monday Tuesday Wednesday Thursday Friday

  6. Data Filtering: “Background” versus “Activity” EX 1-3 Hz Oct. 2008 • Pulled month trends (37 minute trends) from Oct. 2005 to Jul 2011 for z-direction 1-3 Hz • Background Cutoff: 10 microns/s • Activity: All points above 10 microns/s

  7. “Background” Summer EY EX

  8. Percentage of Data Above Baseline Drop in “Activity” Start of 200 Cleanup from Recovery Act EY EX

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