USGS Body-Wave Moment Tensor Solution

WESTERN SICHUAN, CHINA

13/04/20 00:02:47.43

Epicenter:  30.284  102.955
MW 6.5

USGS MOMENT TENSOR SOLUTION
Depth  19         No. of sta: 51
Moment Tensor;   Scale 10**18 Nm
  Mrr= 6.31       Mtt=-1.39
  Mpp=-4.92       Mrt=-0.38
  Mrp=-0.27       Mtp=-4.39
 Principal axes:
  T  Val=  6.33  Plg=87  Azm=173
  N        1.56       2       34
  P       -7.90       2      304

Best Double Couple:Mo=7.2*10**18
 NP1:Strike= 32 Dip=43 Slip=  87
 NP2:       216     47        93

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