Strong ground motion and damage in the Taipei basin from the Moho reflected seismic waves during the March 31, 2002, Hualien, Taiwan earthquake

Details Strong ground motion and damage in the Taipei basin from the Moho reflected seismic waves during the March 31, 2002, Hualien, Taiwan earthquake Strong ground motion and damage in the Taipei basin from the Moho reflected seismic waves during the March 31, 2002, Hualien, Taiwan earthquake

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30k...5c&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 11, pp. 5-1, CiteID 1551, DOI 10.1029/2003GL017193

Physics

2

Seismology: Body Wave Propagation, Seismology: Earthquake Ground Motions And Engineering, Seismology: Seismic Hazard Assessment And Prediction

Scientific paper

The March 31, 2002, Hualien offshore earthquake (ML6.8, Mw7.0) caused minor damage near its epicenter but significant damage in Taipei, about 110 km from the epicenter. The recorded PGA values around the Taipei basin vary in a factor of 5. The high-PGA values in the southeastern part of the basin correspond to the most significant damage area during the earthquake. Strong ground-motion recordings from this event recorded at stations around the Taipei basin exhibit several distinct large-amplitude seismic arrivals that can be interpreted as the PmP, SmP and SmS phases. The largest amplitude of the critically reflected S-wave from the Moho (SmS) and the amplification of soft shallow sediments unique for each site are responsible for the maximum peak ground motion and the significant damage in the Taipei basin during the Hualien offshore earthquake.

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