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A teleseism is a tremor caused by an earthquake that is very far away. According to the USGS, the term teleseismic refers to earthquakes that occur more than 1000 km from the measurement site.[1] Often teleseismic events can be picked up only by seismometers that are in low background noise locations; whereas, in general, a tremor of a magnitude 5.3 earthquake can be seen anywhere in the world with modern seismic instruments.


  1. ^ Anderson DN, Fagan DK, Tinker MA, Kraft GD, Hutchenson KD (2007). "A mathematical statistics formulation of the teleseismic explosion" (PDF). Bulletin of the Seismological Society of America. 97 (5): 1730–41. Bibcode:2007BuSSA..97.1730A. doi:10.1785/0120060052.