USGS Centroid Moment Solution

BOUGAINVILLE REGION, P.N.G.

13/04/14 01:32:24.30

Epicenter:  -6.512  154.595
MW 6.5

USGS CENTROID MOMENT TENSOR
13/04/14 01:32:36.59
Centroid:  -6.534  154.051
Depth  25         No. of sta: 32
Moment Tensor;   Scale 10**18 Nm
  Mrr= 6.61       Mtt=-3.54
  Mpp=-3.07       Mrt= 0.83
  Mrp=-3.85       Mtp= 3.75
 Principal axes:
  T  Val=  7.98  Plg=70  Azm= 97
  N       -0.15      15      320
  P       -7.83      13      227

Best Double Couple:Mo=7.9*10**18
 NP1:Strike=297 Dip=34 Slip=  63
 NP2:       149     60       107

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