USGS Body-Wave Moment Tensor Solution
BULGARIA
12/05/22 00:00:32.00 Epicenter: 42.686 23.027 MW 5.5 USGS MOMENT TENSOR SOLUTION Depth 11 No. of sta: 88 Moment Tensor; Scale 10**17 Nm Mrr=-1.64 Mtt= 0.67 Mpp= 0.97 Mrt=-0.92 Mrp= 0.32 Mtp=-0.88 Principal axes: T Val= 1.91 Plg=14 Azm=226 N 0.05 13 133 P -1.96 71 1 Best Double Couple:Mo=1.9*10**17 NP1:Strike=125 Dip=60 Slip=-105 NP2: 334 33 -65
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.
