M 6.5 - 133 km SSW of Padang, Indonesia

Minor damage at Padang. Felt in central Sumatera, Singapore and southern Malaysia. Two events about 4.7 seconds apart. Depth from broadband displacement seismograms, based on first event. FAULT PLANE SOLUTION: P-Waves NP1:Strike=115 Dip=80 Slip=90 NP2:Strike=295 Dip=10 Slip=90 Principal Axes: (T) Plg=55 Azm=25 (P) Plg=35 Azm=205 Comment: The focal mechanism is poorly controlled and corresponds to reverse faulting. The preferred fault plane is NP2. RADIATED ENERGY No. of sta: 13 Focal mech. F Energy 2.9+0.8*10**13 Nm MOMENT TENSOR SOLUTION Dep 23 No. of sta: 19 Moment Tensor; Scale 10**18 Nm Mrr=1.10 Mtt=-0.61 Mff=-0.49 Mrt=4.84 Mrf=-2.72 Mtf=0.47 Principal axes: (T) Val=5.71 Plg=50 Azm=27 (N) Val=-0.11 Plg=2 Azm=120 (P) Val=-5.60 Plg=40 Azm=211 Best Double Couple:Mo=5.7*10**18 NP1:Strike=320 Dip=6 Slip=110 NP2:Strike=120 Dip=85 Slip=88 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 46S,102C M.W.: 42S, 68C Centroid Location: Origin Time 08:18:23.3 0.1 Lat 2.16S 0.01 Lon 99.60E 0.01 Dep 15.0 FIX Half-duration 4.0 Moment Tensor; Scale 10**18 Nm Mrr=1.31 0.01 Mtt=-0.94 0.01 Mff=-0.37 0.02 Mrt=3.96 0.06 Mrf=-3.16 0.07 Mtf=0.81 0.01 Principal Axes: (T) Val=5.16 Plg=53 Azm=40 (N) Val=0.20 Plg=1 Azm=308 (P) Val=-5.36 Plg=37 Azm=218 Best Double Couple:Mo=5.3*10**18 NP1:Strike=301 Dip=8 Slip=83 NP2:Strike=128 Dip=82 Slip=91