How accurate can strong ground motion attenuation relations be?

John Douglas, Patrick M. Smit

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


This article gives the results of a study using 1484 strong-motion records, which tried to find an upper limit on the accuracy that attenuation relations can achieve independently of the functional form adopted and the methods used for the construction of the equation. It is found that the current data do not allow a significant improvement in the uncertainty over what has been found for previous attenuation relations. Also, we find evidence for significant nonuniform scatter with respect to magnitude and that the scatter is not dependent on the amplitude of ground motion.

Original languageEnglish
Pages (from-to)1917-1923
Number of pages7
JournalBulletin of the Seismological Society of America
Issue number6
Publication statusPublished - Dec 2001


  • strong-motion records
  • ground motions
  • ground motion prediction

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