USGS Centroid Moment Solution
SOLOMON ISLANDS
12/09/27 23:53:49.29 Epicenter: -8.814 157.557 MW 5.8 USGS CENTROID MOMENT TENSOR 12/09/27 23:54:01.70 Centroid: -8.296 156.703 Depth 10 No. of sta: 11 Moment Tensor; Scale 10**17 Nm Mrr= 3.32 Mtt=-1.32 Mpp=-2.00 Mrt= 0.47 Mrp=-4.83 Mtp= 1.87 Principal axes: T Val= 6.22 Plg=58 Azm= 98 N -0.57 15 342 P -5.65 27 244 Best Double Couple:Mo=5.9*10**17 NP1:Strike=301 Dip=23 Slip= 47 NP2: 166 74 106
The figure above shows a visual representation of the style of faulting (focal mechanism)
derived from the estimated moment tensor.
Shaded areas show quadrants of the focal sphere in which the P-wave first-motions
are away from the source, and unshaded areas show quadrants
in which the P-wave first-motions are toward the source.
The dots represent the axis of maximum compressional strain
(in black, called the "P-axis")
and the axis of maximum extensional strain (in white, called the "T-axis")
resulting from the earthquake.
