Lesson 4: Locating the Epicenter of an Earthquake

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6 Terms

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Triangulation Method

Used in locating the epicenter of an earthquake with three seismic stations.

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3

How many seismic stations are need in order to locate the epicenter?

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Formula for finding the distance of each epicenter from the seismic station.

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d

Distance of the epicenter from the station (km).

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Td

Time difference in the arrival time of P-wave and S-wave.

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d x given scale

Compute the distance on the map using the scale given.