USGS Centroid Moment Solution


11/08/20 16:54:58.34

Epicenter: -18.417  168.075
MW 7.1

11/08/20 16:55:24.90
Centroid: -18.444  167.780
Depth  36         No. of sta: 159
Moment Tensor;   Scale 10**19 Nm
  Mrr= 5.84       Mtt=-0.63
  Mpp=-5.21       Mrt= 1.69
  Mrp=-1.96       Mtp= 1.62
 Principal axes:
  T  Val=  6.46  Plg=76  Azm= 34
  N       -0.26       8      159
  P       -6.20      11      250

Best Double Couple:Mo=6.3*10**19
 NP1:Strike=351 Dip=34 Slip= 104
 NP2:       153     57        80

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