M 6.5 - 153 km WSW of Xining, China

At least 126 people killed, many injured, extensive damage and landslides in the Gonghe-Xinghai area. Also felt in Gansu Province. Depth from broadband displacement seismograms. FAULT PLANE SOLUTION: P-Waves NP1:Strike=135 Dip=45 Slip=90 NP2:Strike=315 Dip=45 Slip=90 Principal Axes: (T) Plg=90 Azm=0 (P) Plg=0 Azm=45 Comment: The focal mechanism is poorly controlled and corresponds to reverse faulting. The preferred fault plane is not determined. RADIATED ENERGY No. of sta: 5 Focal mech. M Energy 2.1+0.9*10**14 Nm MOMENT TENSOR SOLUTION Dep 10 No. of sta: 11 Moment Tensor; Scale 10**18 Nm Mrr=1.52 Mtt=-0.62 Mff=-0.90 Mrt=-0.07 Mrf=0.93 Mtf=0.85 Principal axes: (T) Val=1.85 Plg=69 Azm=285 (N) Val=-0.05 Plg=16 Azm=147 (P) Val=-1.80 Plg=13 Azm=54 Best Double Couple:Mo=1.8*10**18 NP1:Strike=123 Dip=35 Slip=61 NP2:Strike=337 Dip=60 Slip=108 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 10S, 23C M.W.: 10S, 26C Centroid Location: Origin Time 09:37:27.9 0.4 Lat 36.25N 0.03 Lon 100.57E 0.04 Dep 15.0 FIX Half-duration 8.0 Moment Tensor; Scale 10**18 Nm Mrr=3.66 0.08 Mtt=-2.35 0.07 Mff=-1.31 0.09 Mrt=0.77 0.29 Mrf=2.96 0.28 Mtf=3.43 0.06 Principal Axes: (T) Val=5.69 Plg=55 Azm=300 (N) Val=-0.17 Plg=33 Azm=140 (P) Val=-5.52 Plg=9 Azm=44 Best Double Couple:Mo=5.6*10**18 NP1:Strike=101 Dip=46 Slip=41 NP2:Strike=340 Dip=62 Slip=128