USGS/SLU Regional Moment Solution

13/02/08 02:47:02.59

Epicenter:  37.795 -113.138
MW 3.7

USGS/SLU REGIONAL MOMENT TENSOR
Depth   3         No. of sta: 42
Moment Tensor;   Scale 10**14 Nm
  Mrr=-5.02       Mtt= 0.85
  Mpp= 4.16       Mrt= 0.68
  Mrp= 0.41       Mtp= 2.12
 Principal axes:
  T  Val=  5.24  Plg= 4  Azm=296
  N       -0.15       5       27
  P       -5.10      84      170

Best Double Couple:Mo=5.2*10**14
 NP1:Strike= 21 Dip=42 Slip= -98
 NP2:       211     49       -83

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