USGS WPhase Moment Solution

NEAR N COAST OF NEW GUINEA, PNG.

13/04/16 22:55:26

Epicenter:  -3.177  142.514
MW 6.6

USGS/WPHASE CENTROID MOMENT TENSOR
13/04/16 22:55:26.00
Centroid:   -3.277  142.514
Depth  11         No. of sta: 28
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.42       Mtt=-0.17
  Mpp=-0.25       Mrt=-0.12
  Mrp= 1.00       Mtp= 0.44
 Principal axes:
  T  Val=  1.16  Plg=52  Azm=282
  N     = -0.01      19      164
  P     = -1.16      30       62

Best Double Couple:Mo=1.1*10**19
 NP1:Strike=107 Dip=23 Slip=  30
 NP2:       349     79       110

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.