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The Gutenberg-Richter relation describes the

  • A.variation of focal depth with plate age
  • B.relation between magnitude and fault dip
  • C.number of earthquakes as a function of magnitude
  • D.attenuation of intensity with distance

Answer: C

It states that the logarithm of the number of events exceeding a magnitude falls linearly with that magnitude, so small earthquakes vastly outnumber large ones. The slope is the b-value and is close to one in most regions.

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