USGS/SLU Regional Moment Solution

13/02/13 00:10:14.26

Epicenter:  38.028 -118.052
MW 5.1

USGS/SLU REGIONAL MOMENT TENSOR
Depth   9         No. of sta: 43
Moment Tensor;   Scale 10**16 Nm
  Mrr=-0.48       Mtt=-1.13
  Mpp= 1.61       Mrt= 1.27
  Mrp=-1.69       Mtp= 4.58
 Principal axes:
  T  Val=  5.09  Plg= 7  Azm=125
  N        0.29      66       20
  P       -5.38      23      218

Best Double Couple:Mo=5.2*10**16
 NP1:Strike=354 Dip=79 Slip=-159
 NP2:       259     69       -12

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