Probabilistic seismic hazard assessment for Taiwan: TEM PSHA2020

Chung Han Chan, Kuo Fong Ma, J. Bruce H. Shyu, Ya Ting Lee, Yu Ju Wang, Jia Cian Gao, Yin Tung Yen, Ruey Juin Rau

Research output: Contribution to journalArticlepeer-review

Abstract

The Taiwan Earthquake Model (TEM) published the first version of the Taiwan probabilistic seismic hazard assessment (named TEM PSHA2015) 5 years ago. For updating to the TEM PSHA2020, we considered an updated seismogenic structure database, including the structures newly identified with 3D geometry, an earthquake catalog made current to 2016, state-of-the-art seismic models, a new set of ground motion prediction equations, and site amplification factors. In addition to earthquakes taking place on each individual seismogenic structure, the updated seismic model included the possibility of an earthquake occurring on multiple structures. To include fault memory for illustrating activity on seismogenic structure sources, we incorporated the Brownian passage time model. For the crustal seismicity that cannot be attributed to any specific structure, we implemented both area source and smoothing kernel models. A new set of ground motion prediction equations is incorporated. In addition to the calculation of hazard at engineering bedrock, our assessment included site amplification factors that competent authorities of governments and private companies could use to implement hazard prevention and reduction strategies.

Original languageEnglish
Pages (from-to)137-159
Number of pages23
JournalEarthquake Spectra
Volume36
Issue number1_suppl
DOIs
Publication statusPublished - 2020 Oct 1

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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