USGS Centroid Moment Solution

BISMARCK SEA

12/12/29 07:59:15.73

Epicenter:  -3.327  148.770
MW 5.9

USGS CENTROID MOMENT TENSOR
12/12/29 07:59:52.20
Centroid:  -3.104  148.566
Depth  10         No. of sta: 56
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.06       Mtt= 0.72
  Mpp=-0.65       Mrt=-0.01
  Mrp=-0.16       Mtp= 0.72
 Principal axes:
  T  Val=  1.03  Plg= 3  Azm=157
  N       -0.05      81       45
  P       -0.98       9      247

Best Double Couple:Mo=1.0*10**18
 NP1:Strike= 22 Dip=86 Slip=-171
 NP2:       292     81        -4

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