M 6.7 - 63 km WSW of Panguna, Papua New Guinea

Felt strongly on Bougainville and (IV) at Rabaul, Papua New Guinea. Felt on Choiseul, Santa Isabel and at Honiara, Solomon Islands. Also felt on New Ireland. Two events about two seconds apart. Depth from broadband displacement seismograms, based on second event. FAULT PLANE SOLUTION: P-Waves NP1:Strike=128 Dip=50 Slip=90 NP2:Strike=308 Dip=40 Slip=90 Principal Axes: (T) Plg=85 Azm=38 (P) Plg=5 Azm=218 Comment: The focal mechanism is poorly controlled and corresponds to reverse faulting. The preferred fault plane is NP2. RADIATED ENERGY No. of sta: 24 Focal mech. F Energy 5.1+1.0*10**13 Nm MOMENT TENSOR SOLUTION Dep 37 No. of sta: 21 Moment Tensor; Scale 10**19 Nm Mrr=1.36 Mtt=-0.81 Mff=-0.54 Mrt=-0.31 Mrf=-0.01 Mtf=0.70 Principal axes: (T) Val=1.41 Plg=80 Azm=159 (N) Val=0.00 Plg=8 Azm=308 (P) Val=-1.41 Plg=5 Azm=39 Best Double Couple:Mo=1.4*10**19 NP1:Strike=138 Dip=41 Slip=103 NP2:Strike=301 Dip=51 Slip=79 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 45S,106C M.W.: 49S,110C Centroid Location: Origin Time 17:30: 3.5 0.1 Lat 6.61S 0.01 Lon 154.92E 0.01 Dep 52.1 0.3 Half-duration 5.5 Moment Tensor; Scale 10**19 Nm Mrr=1.31 0.01 Mtt=-0.75 0.00 Mff=-0.56 0.01 Mrt=-0.01 0.01 Mrf=0.03 0.01 Mtf=0.74 0.00 Principal Axes: (T) Val=1.31 Plg=89 Azm=274 (N) Val=0.09 Plg=1 Azm=131 (P) Val=-1.40 Plg=0 Azm=41 Best Double Couple:Mo=1.4*10**19 NP1:Strike=131 Dip=45 Slip=89 NP2:Strike=312 Dip=45 Slip=91