Teleseism

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.

References

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. CiteSeerX 10.1.1.532.5474. doi:10.1785/0120060052.

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[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. CiteSeerX 10.1.1.532.5474. doi:10.1785/0120060052.