USGS/SLU Regional Moment Solution

SOUTHERN IDAHO

13/05/16 05:23:52.65

Epicenter:  42.773 -111.207
MW 3.6

USGS/SLU REGIONAL MOMENT TENSOR
Depth   9         No. of sta: 23
Moment Tensor;   Scale 10**14 Nm
  Mrr=-0.28       Mtt=-2.91
  Mpp= 3.19       Mrt= 0.28
  Mrp=-0.66       Mtp= 0.16
 Principal axes:
  T  Val=  3.32  Plg=10  Azm= 91
  N       -0.36      78      304
  P       -2.95       7      182

Best Double Couple:Mo=3.1*10**14
 NP1:Strike=136 Dip=87 Slip= 168
 NP2:       227     78         3

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