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| | Abstract | | We simulated long-period ground motions (2-20s) from Strong Motion Generation Areas (SMGAs) of the 2011 off the Pacific coast of Tohoku Earthquake (Kurahashi and Irikura, 2013) in order to verify the period-range of ground motions from the SMGA model (Kurahashi and Irikura, 2013). First, we determined velocity structural models beneath target stations by fitting observed to synthetic motions numerically calculated using Simulated Annealing. The observed records (1-20s) during the 2005 Miyagi-oki earthquake (Mw7.2) were employed for verifying the velocity structural models. Next, we simulated long-period ground motions from SMGAs model of the Tohoku earthquake using numerical Green's functions. We found that the simulated ground motion matched well with the observed records in the range of 2-20 seconds. The SMGA model was not available for the observed motions longer than 20 seconds. |
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