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Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?
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Why is a minimum of three seismic stations needed to find the epicenter of an earthquake?

User Rigby
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Each station can detect how far away the epicenter was. So each station basically has a circle made of possible epicenters. When you have three, you narrow it down to one, final point.

User Jdewit
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