USGS Body-Wave Moment Tensor Solution

13/02/20 21:23:08.07

Epicenter:  18.639 -103.863
MW 5.5

USGS MOMENT TENSOR SOLUTION
Depth  14         No. of sta: 35
Moment Tensor;   Scale 10**17 Nm
  Mrr= 1.69       Mtt=-1.05
  Mpp=-0.64       Mrt= 1.18
  Mrp=-0.63       Mtp= 0.93
 Principal axes:
  T  Val=  2.16  Plg=70  Azm= 19
  N        0.08       6      125
  P       -2.24      19      217

Best Double Couple:Mo=2.2*10**17
 NP1:Strike=316 Dip=27 Slip= 103
 NP2:       122     64        84

Moment Tensor Solution
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.

Moment Tensor Solution