USGS Body-Wave Moment Tensor Solution

NEW IRELAND REGION, P.N.G.

13/04/23 23:14:41.98

Epicenter:  -3.911  152.127
MW 6.4

USGS MOMENT TENSOR SOLUTION
Depth  13         No. of sta: 56
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.19       Mtt= 4.29
  Mpp=-4.48       Mrt=-0.91
  Mrp=-0.09       Mtp= 1.51
 Principal axes:
  T  Val=  4.73  Plg=11  Azm=171
  N        0.01      79      347
  P       -4.73       1       80

Best Double Couple:Mo=4.7*10**18
 NP1:Strike=306 Dip=83 Slip=   9
 NP2:       215     81       172

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