USGS Body-Wave Moment Tensor Solution


13/02/14 13:13:52.86

Epicenter:  67.582  142.564
MW 6.6

Depth  12         No. of sta:164
Moment Tensor;   Scale 10**18 Nm
  Mrr= 7.36       Mtt=-4.43
  Mpp=-2.93       Mrt= 1.20
  Mrp= 2.20       Mtp= 5.63
 Principal axes:
  T  Val=  8.32  Plg=69  Azm=307
  N        1.05      21      132
  P       -9.38       2       42

Best Double Couple:Mo=8.9*10**18
 NP1:Strike=331 Dip=51 Slip= 118
 NP2:       111     47        60

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