Response spectral attenuation relations for shallow crustal earthquakes in Taiwan

Po Shen Lin, Chyi Tyi Lee, Chin Tung Cheng, Chih Hsuan Sung

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

In this study, a local set of response spectral attenuation equations, developed for seismic hazard analysis in Taiwan, are introduced as an example for determining the local strong motion attenuation relationship for a region. Strong ground-motion data for shallow crustal earthquakes are obtained from the Taiwan Strong-motion Instrumentation Program (TSMIP). These data are used to establish peak ground acceleration (PGA) and response spectral acceleration (SA) attenuation equations taking into consideration both hanging-wall effects and site conditions. The obtained results show that the local set of attenuation equations gives significantly lower values of PGA and SA for structural periods shorter than 0.3. s as compared to a set of global relations obtained from international data. The SAs obtained for structural periods longer than 0.3. s are similar to those obtained for global sets. This indicates that developing a local set of ground-motion attenuation equations is necessary for more accurate prediction of ground motion values.

Original languageEnglish
Pages (from-to)150-164
Number of pages15
JournalEngineering Geology
Volume121
Issue number3-4
DOIs
StatePublished - 10 Aug 2011

Keywords

  • Attenuation relationship
  • Crustal earthquakes
  • Hanging-wall effect
  • Peak ground acceleration
  • Spectral acceleration
  • Strong ground motion

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