USGS WPhase Moment Solution
CRETE, GREECE
12/ 9/12 3:27:45.00 Epicenter: 34.811 24.064 MW 5.5 USGS/WPHASE CENTROID MOMENT TENSOR 12/ 9/12 3:27:45.00 Centroid: 34.911 23.942 Depth 30 No. of sta: 29 Moment Tensor; Scale 10**17 Nm Mrr= 0.83 Mtt=-0.63 Mpp=-0.20 Mrt= 1.66 Mrp=-1.09 Mtp= 0.31 Principal axes: T Val= 2.17 Plg=55 Azm= 35 N = -0.05 1 302 P = -2.12 33 211 Best Double Couple:Mo=2.1*10**17 NP1:Strike=293 Dip=11 Slip= 81 NP2: 123 79 92
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.
