USGS WPhase Moment Solution
11/08/23 17:51: 3 Epicenter: 37.974 -77.968 MW 5.8 USGS/WPHASE CENTROID MOMENT TENSOR 11/08/23 17:51: 3.00 Centroid: 37.974 -77.715 Depth 11 No. of sta: 73 Moment Tensor; Scale 10**17 Nm Mrr= 4.85 Mtt= 0.29 Mpp=-5.13 Mrt= 1.03 Mrp=-2.13 Mtp=-1.37 Principal axes: T Val= 5.60 Plg=71 Azm= 42 N = 0.19 15 188 P = -5.79 10 281 Best Double Couple:Mo=5.7*10**17 NP1:Strike= 30 Dip=37 Slip= 117 NP2: 177 57 71
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.
