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Rupture length generally increases with

  • A.focal depth
  • B.epicentral distance
  • C.the b-value of the region
  • D.magnitude

Answer: D

A larger earthquake means a larger area of fault slipping, so great earthquakes involve ruptures hundreds of kilometres long while a moderate one may break only a few kilometres. This is why the length of an active fault limits the magnitude it can produce.

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