M 8.3 - 48 km E of Shikotan, Russia

At least 10 people killed or missing, many injured and damage on Iturup. Considerable damage (IX) on Shikotan from the earthquake and tsunami. Damage also occurred on Kunashir. Felt (IV) at Kurilsk; (III) at Severo-Kurilsk and on Matua; (II) on Simushir. One person died from a heart attack, at least 200 people were injured and extensive damage and landslides occurred along the eastern coast of Hokkaido. Felt strongly in northern Honshu and as far south as the Tokyo area. Tsunami wave heights from selected tide stations (peak-to-trough) were as follows: 346 cm. at Hanasaki, 164 cm. at Kushiro, 26 cm. at Abashiri, Hokkaido; 144 cm. at Miyako, 130 cm. at Hachinohe, 92 cm. at Ofunato, 62 cm. at Onahama, 46 cm. at Omae-zaki, 42 cm. at Choshi, Honshu; 162 cm. on Chichi-shima; 300 cm. at Yuzhno-Kurilsk, Kunashir Island, 15 cm. on Shemya, 16 cm. at Pago Pago, American Samoa, 17 cm. on Wake Island, 50 cm. on Midway Island and 48 cm. at Hilo, Hawaii. Complex event observed on broadband displacement seismograms. FAULT PLANE SOLUTION: P-Waves NP1:Strike=55 Dip=78 Slip=145 NP2:Strike=153 Dip=56 Slip=15 Principal Axes: (T) Plg=33 Azm=9 (P) Plg=14 Azm=108 Comment: The focal mechanism is moderately well controlled and corresponds to strike-slip faulting with a large reverse component. The preferred fault plane is not determined. Complex rupture; focal mechanism based on second subevent. RADIATED ENERGY No. of sta: 33 Focal mech. F Energy 1.1+0.1*10**17 Nm MOMENT TENSOR SOLUTION Dep 61 No. of sta: 41 Moment Tensor; Scale 10**21 Nm Mrr=0.67 Mtt=0.57 Mff=-1.24 Mrt=1.18 Mrf=0.76 Mtf=-1.01 Principal axes: (T) Val=1.81 Plg=44 Azm=5 (N) Val=0.39 Plg=37 Azm=229 (P) Val=-2.20 Plg=23 Azm=120 Best Double Couple:Mo=2.0*10**21 NP1:Strike=163 Dip=39 Slip=19 NP2:Strike=58 Dip=78 Slip=128 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN M.W.: 60S,166C Centroid Location: Origin Time 13:23:28.5 0.1 Lat 43.60N 0.00 Lon 147.63E 0.01 Dep 68.2 0.4 Half-duration 25.0 Moment Tensor; Scale 10**21 Nm Mrr=1.21 0.01 Mtt=1.09 0.01 Mff=-2.30 0.01 Mrt=1.78 0.02 Mrf=0.98 0.01 Mtf=-0.94 0.01 Principal Axes: (T) Val=2.93 Plg=46 Azm=359 (N) Val=0.12 Plg=37 Azm=218 (P) Val=-3.06 Plg=20 Azm=112 Best Double Couple:Mo=3.0*10**21 NP1:Strike=158 Dip=41 Slip=24 NP2:Strike=50 Dip=74 Slip=128