USGS Centroid Moment Solution


13/04/19 03:05:53.48

Epicenter:  46.184  150.826
MW 7.3

13/04/19 03:06:10.50
Centroid:  46.149  151.157
Depth  78         No. of sta:181
Moment Tensor;   Scale 10**20 Nm
  Mrr=-0.18       Mtt= 0.42
  Mpp=-0.23       Mrt= 0.94
  Mrp= 0.46       Mtp=-0.04
 Principal axes:
  T  Val=  1.15  Plg=38  Azm=347
  N       -0.08      15      245
  P       -1.07      49      138

Best Double Couple:Mo=1.1*10**20
 NP1:Strike=133 Dip=16 Slip= -22
 NP2:       244     84      -105

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