Seismic reversal pattern for the 1999 Chi-Chi, Taiwan, MW 7.6 earthquake

Yih Min Wu, Chien chih Chen

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

We in this study have calculated the standard normal deviate Z-value to investigate the variations in seismicity patterns in the Taiwan region before and after the Chi-Chi earthquake. We have found that the areas with relatively high seismicity in the eastern Taiwan became abnormally quiet before the Chi-Chi earthquake while the area in the central Taiwan with relatively low seismicity showed unusually active. Such a spatially changing pattern in seismicity strikingly demonstrates the phenomenon of "seismic reversal," and we here thus present a complete, representative cycle of "seismic reversal" embedding in the changes of seismicity patterns before and after the Chi-Chi earthquake.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalTectonophysics
Volume429
Issue number1-2
DOIs
StatePublished - 1 Jan 2007

Keywords

  • Chi-Chi earthquake
  • Seismic activation
  • Seismic quiescence
  • Seismic reversal

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