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Earthquake Measurement

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Earthquake Measurement

Earthquake Measurement

- Scientists (Seismologists) use seismographs that are located near the surface of the Earth to record the seismic waves.
- Epicenter:Is the point on the Earth’s surface directly above an earthquakes starting point.

- Seismologists use the readings from three separate seismograph stations.
- 1 seismic station: Epicenter is anywhere on the distance circle.
- 2 seismic stations: Epicenter is at one of two points.
- 3 seismic stations: Epicenter is at one unique point.

- U.S.A. earthquakes