USGS Centroid Moment Solution
SOLOMON ISLANDS
12/10/14 04:58:07.60 Epicenter: -7.188 156.051 MW 5.8 USGS CENTROID MOMENT TENSOR 12/10/14 04:58:22.29 Centroid: -6.960 155.553 Depth 47 No. of sta: 7 Moment Tensor; Scale 10**17 Nm Mrr= 6.60 Mtt=-4.62 Mpp=-1.98 Mrt=-0.92 Mrp= 0.48 Mtp= 4.26 Principal axes: T Val= 6.68 Plg=86 Azm=195 N 1.16 2 306 P -7.84 4 36 Best Double Couple:Mo=7.3*10**17 NP1:Strike=128 Dip=41 Slip= 92 NP2: 305 49 88
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.
