Periodically Triggered Seismicity at Mount Wrangell, Alaska, After the Sumatra Earthquake

  title={Periodically Triggered Seismicity at Mount Wrangell, Alaska, After the Sumatra Earthquake},
  author={Michael E. West and John J. S{\'a}nchez and Stephen R. McNutt},
  pages={1144 - 1146}
As surface waves from the 26 December 2004 earthquake in Sumatra swept across Alaska, they triggered an 11-minute swarm of 14 local earthquakes near Mount Wrangell, almost 11,000 kilometers away. Earthquakes occurred at intervals of 20 to 30 seconds, in phase with the largest positive vertical ground displacements during the Rayleigh surface waves. We were able to observe this correlation because of the combination of unusually long surface waves and seismic stations near the local earthquakes… 
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Quantitative Seismology (University Science Books, Sausalito
  • CA, ed
  • 2002