常時微動観測の応用 - cjrd.tottori-u.ac.jp

1 1 2 Love Rayleigh 3 Rayleigh 4 ( ) GPS 5 GPS f 6 f 7 H/V H/V Rayleigh Love Rayleigh 1986 H/V 8 H/V NS/UD EW/UD Rayleigh H/V I 2008 9

2 800 /s 10 800m/s 100 11 12 (1992 Band pass filter ( ) ( ) ( ) cT 14 15 FK f F-K f k k kfc SPAC CORRELATIOJ0(2 fr/c))

3 024 FREQUENCY [Hz] 10 16 CCA 134m/s)34m/s)34m/s)THKNS VpVsRHO[km] [km/s] [km/s] [g/cm3] 1 1 23 ITY(km23 ITY(km23 ITY(kmTHKNS VpVsRHO[km] [km/s] [km/s] [g/cm3] 2 1 VpVsRHO[km] [km/s] [km/s] [g/cm3]1300220008002100 3 3 2 FREQUENCY(Hz) FREQUENCY(Hz) FREQUENCY(Hz) 17 Rmax=800mRmax=200m18 I 2008 velocity(km/s)Rayleigh (km) S GA 19 (2008 Kagawa et al.(2004 [m] [Hz]Vs[m/s] 20 H/V (No90) H/V ( )10 Ratio 2011 1mplitude 1 10 Period(s)AmH/V ( )10oPeriod(s)1ude Ratio011 Amplitu( ) 1 10 Period(s) H/V (Model1) 30 30mVs=150m/s H/V100Vs=500m/s10 RatioModel2 Model1(Model2)1plitudeVs=90 (s)Vs=500m/s (2005) [ ] 95 g/c Vp(m/s) Vs(m/s) (m)151400803 g/c Vp(m/s) Vs(m/s) (m) 1450 135 1500 180 150200ocity (m/s) (m/s) Velo50100 Phase Veloc 00 5 10 15 20 Frequency (Hz)005101520 Frequency (Hz)P (NS ) 100010000al) h= ( (sec)Period (sec) (NS )))

4 1 Period (sec) []