USGS Body-Wave Moment Tensor Solution


12/08/31 12:47:34.48

Epicenter:  10.831  126.651
MW 7.5

Depth  45         No. of sta: 63
Moment Tensor;   Scale 10**20 Nm
  Mrr= 2.33       Mtt= 0.42
  Mpp=-2.75       Mrt=-0.23
  Mrp=-0.42       Mtp=-0.21
 Principal axes:
  T  Val=  2.38  Plg=82  Azm=144
  N        0.42       6        5
  P       -2.80       5      274

Best Double Couple:Mo=2.6*10**20
 NP1:Strike=358 Dip=40 Slip=  81
 NP2:       189     50        98

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