USGS WPhase Moment Solution
12/10/21 6:55:09 Epicenter: 36.311 -120.856 MW 5.4 USGS/WPHASE CENTROID MOMENT TENSOR 12/10/21 06:55: 9.00 Centroid: 36.211 -120.980 Depth 11 No. of sta: 74 Moment Tensor; Scale 10**17 Nm Mrr= 0.15 Mtt=-1.18 Mpp= 1.03 Mrt= 0.42 Mrp= 0.48 Mtp= 0.78 Principal axes: T Val= 1.53 Plg=23 Azm=289 N = -0.06 64 84 P = -1.47 9 195 Best Double Couple:Mo=1.5*10**17 NP1:Strike=330 Dip=66 Slip= 170 NP2: 65 81 24
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.
