USGS/SLU Regional Moment Solution

13/04/12 20:33:18.66

Epicenter:  34.422  134.841
MW 5.7

USGS/SLU REGIONAL MOMENT TENSOR
Depth  15         No. of sta: 11
Moment Tensor;   Scale 10**17 Nm
  Mrr= 3.01       Mtt= 0.62
  Mpp=-3.64       Mrt= 0.36
  Mrp=-2.27       Mtp= 0.82
 Principal axes:
  T  Val=  3.72  Plg=73  Azm= 83
  N        0.78       1      350
  P       -4.49      17      260

Best Double Couple:Mo=4.2*10**17
 NP1:Strike=171 Dip=62 Slip=  91
 NP2:       348     28        88

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