M 7.3 - 37 km ESE of Bato, Philippines

Slight damage (VI RF) at Virac. Felt (V RF) in the Naga-Legaspi-Catbalogan area and (III RF) at Cebu and Manila. FAULT PLANE SOLUTION: P-Waves NP1:Strike=348 Dip=78 Slip=90 NP2:Strike=168 Dip=12 Slip=90 Principal Axes: (T) Plg=57 Azm=258 (P) Plg=33 Azm=78 Comment: The focal mechanism is poorly controlled and corresponds to reverse faulting. The preferred fault plane is NP2. RADIATED ENERGY No. of sta: 6 Focal mech. M Energy 1.1+0.2*10**15 Nm MOMENT TENSOR SOLUTION Dep 37 No. of sta: 13 Moment Tensor; Scale 10**19 Nm Mrr=3.14 Mtt=0.04 Mff=-3.17 Mrt=-1.09 Mrf=7.41 Mtf=-0.24 Principal axes: (T) Val=8.17 Plg=56 Azm=257 (N) Val=-0.08 Plg=5 Azm=354 (P) Val=-8.09 Plg=34 Azm=87 Best Double Couple:Mo=8.1*10**19 NP1:Strike=195 Dip=12 Slip=112 NP2:Strike=353 Dip=79 Slip=85 CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 12S, 34C M.W.: 10S, 25C Centroid Location: Origin Time 03:52:13.5 0.2 Lat 13.42N 0.02 Lon 125.03E 0.02 Dep 34.7 0.8 Half-duration 18.0 Moment Tensor; Scale 10**19 Nm Mrr=5.55 0.07 Mtt=-0.85 0.04 Mff=-4.70 0.05 Mrt=-1.75 0.17 Mrf=6.42 0.23 Mtf=1.89 0.04 Principal Axes: (T) Val=8.70 Plg=65 Azm=259 (N) Val=-0.12 Plg=3 Azm=162 (P) Val=-8.58 Plg=25 Azm=70 Best Double Couple:Mo=8.6*10**19 NP1:Strike=153 Dip=20 Slip=80 NP2:Strike=343 Dip=70 Slip=94