To investigate the applicability of Ground Motion Prediction Equations to mega earthquakes, the author applied the GMPEs developed using pre-2011 records (up to M8-class) to the 2011 Tohoku earthquake (Mw9.0). The major results are as follows: 1) definition of source-to-site distance causes large difference not only in the estimation at near-source distances of crustal earthquakes but also for mega-thrust earthquakes. 2) GMPEs using fault distance have tendencies to overestimate for mega earthquake and saturation rate at near-source distances would be revised. 3) GMPEs using Equivalent Hypocentral Distance generally agree with the Tohoku earthquake (can extrapolate to M9). 4) As the other important factors, nonlinear Mw-term and nonlinear soil amplification factors must be modeled to improve the applicability of GMPEs to mega earthquake.
|Publication status||Published - 2014 Jan 1|
|Event||10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering, NCEE 2014 - Anchorage, United States|
Duration: 2014 Jul 21 → 2014 Jul 25
|Other||10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering, NCEE 2014|
|Period||14/7/21 → 14/7/25|
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology