USGS Centroid Moment Solution


13/04/06 04:42:36.13

Epicenter:  -3.526  138.466
MW 7.0

13/04/06 04:42:47.20
Centroid:  -3.612  138.906
Depth  61         No. of sta: 72
Moment Tensor;   Scale 10**19 Nm
  Mrr=-2.97       Mtt=-1.15
  Mpp= 4.11       Mrt= 1.37
  Mrp=-0.50       Mtp= 1.15
 Principal axes:
  T  Val=  4.36  Plg= 2  Azm=101
  N       -0.53      31       10
  P       -3.83      59      194

Best Double Couple:Mo=4.1*10**19
 NP1:Strike=345 Dip=54 Slip=-129
 NP2:       219     51       -49

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