5:15 PM - 6:30 PM
[SSS25-P06] Study on spectral decay characteristics in high frequency range using parameter κ - For crustal earthquakes -
Keywords:Spectral decay characteristics, Kappa, fmax filter, Crustal earthquakes
The κ’s of the three large earthquakes are estimated in the range 0.0142 and 0.0277 and fE’s are estimated in the range 2Hz and 5Hz for the mainshocks of the 2003 Miyagi-ken Hokubu earthquake, the 2005 Fukuoka-Ken Seiho-oki earthquake, and the 2008 Iwate Miyagi Nairiku earthquake. The relationship between κ and the power coefficient of fmax filter, s, and the relationship between fE and fmax are evaluated from the results. Moreover, hypocentral distance dependency of κ is confirmed as demonstrated by previous studies.