M 6.5 - 153 km SSE of ?yama, Japan

Felt (III JMA) on Hachijo-jima and Miyake-jima and in the Osaka-Owase-Yokkaichi area, Honshu. A slight tsunami was reported on Hachijo-jima and Oshima. Complex event, observed on broadband displacement seismograms. FAULT PLANE SOLUTION: P-Waves NP1:Strike=152 Dip=84 Slip=-176 NP2:Strike=62 Dip=86 Slip=-6 Principal Axes: (T) Plg=1 Azm=107 (P) Plg=7 Azm=17 Comment: The focal mechanism is moderately well controlled and corresponds to strike-slip faulting with a small normal component. The preferred fault plane is not determined. RADIATED ENERGY No. of sta: 12 Focal mech. F Energy 1.7+0.5*10**15 Nm MOMENT TENSOR SOLUTION Dep 16 No. of sta: 20 Moment Tensor; Scale 10**18 Nm Mrr=-0.89 Mtt=-6.55 Mff=7.46 Mrt=-0.98 Mrf=1.40 Mtf=-0.84 Principal axes: (T) Val=7.76 Plg=10 Azm=266 (N) Val=-1.01 Plg=77 Azm=130 (P) Val=-6.74 Plg=9 Azm=358 Best Double Couple:Mo=7.2*10**18 NP1:Strike=42 Dip=77 Slip=0 NP2:Strike=312 Dip=90 Slip=167 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 14S, 35C M.W.: 12S, 26C Centroid Location: Origin Time 21:13:15.3 0.2 Lat 33.19N 0.02 Lon 138.34E 0.02 Dep 16.9 1.8 Half-duration 7.4 Moment Tensor; Scale 10**18 Nm Mrr=0.49 0.09 Mtt=-6.93 0.10 Mff=6.44 0.10 Mrt=-0.49 0.44 Mrf=0.19 0.45 Mtf=-2.29 0.07 Principal Axes: (T) Val=6.83 Plg=2 Azm=260 (N) Val=0.51 Plg=86 Azm=134 (P) Val=-7.34 Plg=3 Azm=351 Best Double Couple:Mo=7.1*10**18 NP1:Strike=36 Dip=86 Slip=-1 NP2:Strike=126 Dip=89 Slip=-176