USGS Centroid Moment Solution


12/12/10 16:53:09.15

Epicenter:  -6.540  129.815
MW 7.1

12/12/10 16:53:23.50
Centroid:  -6.567  129.823
Depth 148         No. of sta: 85
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.88       Mtt=-4.08
  Mpp= 3.20       Mrt= 1.79
  Mrp= 3.29       Mtp= 0.29
 Principal axes:
  T  Val=  5.70  Plg=36  Azm=279
  N       -0.96      46       59
  P       -4.74      21      173

Best Double Couple:Mo=5.2*10**19
 NP1:Strike= 49 Dip=81 Slip=  43
 NP2:       311     48       167

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