USGS Body-Wave Moment Tensor Solution


13/02/28 03:09:44.04

Epicenter: -17.769  167.356
MW 5.8

Depth  26         No. of sta: 42
Moment Tensor;   Scale 10**17 Nm
  Mrr= 3.13       Mtt=-1.05
  Mpp=-2.08       Mrt=-0.18
  Mrp=-2.12       Mtp= 4.06
 Principal axes:
  T  Val=  4.52  Plg=52  Azm=128
  N        1.39      36      328
  P       -5.90      10      230

Best Double Couple:Mo=5.3*10**17
 NP1:Strike=285 Dip=48 Slip=  36
 NP2:       169     64       131

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