USGS Body-Wave Moment Tensor Solution


12/01/15 13:40:16.65

Epicenter: -60.793  -55.729
MW 6.4

Depth   2         No. of sta: 31
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.45       Mtt= 4.84
  Mpp=-5.29       Mrt=-2.12
  Mrp= 1.37       Mtp= 1.40
 Principal axes:
  T  Val=  5.75  Plg=21  Azm=175
  N        0.17      64      316
  P       -5.92      15       80

Best Double Couple:Mo=5.8*10**18
 NP1:Strike=308 Dip=86 Slip=  26
 NP2:       217     64       176

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