抄録
Long-period ground motions for the Nankai Trough mega-earthquakes are predicted using our empirical relations for 5% damped acceleration response spectra and group delay time. The predicted waves in the period rage of 0.1 to 10 seconds for the Tonankai earthquake (Mw8.1), the Nankai earthquake (Mw8.4), and the hypothetical mega-earthquake (Mw9.0) are consistent with the previous waves predicted by the other methods if the variations of data and the difference of the methods are taken into account. We also develop empirical models to interpolate site factors obtained at strong motion stations at intervals of about 10 to 20 km in the Kanto basin, the Nobi basin, and the Osaka basin and apply the models for these predictions.
