USGS WPhase Moment Solution

NEW BRITAIN REGION, P.N.G.

12/11/19  9:44:34.00

Epicenter:  -5.733  151.606
MW 6.0

USGS/WPHASE CENTROID MOMENT TENSOR
12/11/19  9:44:34.00
Centroid:   -5.833  151.907
Depth  25         No. of sta: 58
Moment Tensor;   Scale 10**17 Nm
  Mrr=-9.17       Mtt= 5.74
  Mpp= 3.42       Mrt=-4.08
  Mrp=-5.54       Mtp= 5.55
 Principal axes:
  T  Val= 12.34  Plg=17  Azm=138
  N     = -0.84       7       46
  P     =-11.49      70      292

Best Double Couple:Mo=1.2*10**18
 NP1:Strike=241 Dip=28 Slip= -73
 NP2:        42     63       -98

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

Details on the W-phase inversion algorithm.