USGS WPhase Moment Solution

10/ 3/11 14:39:43.95

Epicenter: -34.290  -71.890
MW 6.9

USGS/WPHASE CENTROID MOMENT TENSOR
10/ 3/11 14:39:43.95
Centroid:  -34.390  -71.647
Depth  13         No. of sta: 61
Moment Tensor;   Scale 10**19 Nm
  Mrr=-2.44       Mtt= 0.99
  Mpp= 1.45       Mrt=-0.49
  Mrp= 0.95       Mtp=-1.10
 Principal axes:
  T  Val=  2.57  Plg=11  Azm=231
  N     =  0.11       4      322
  P     = -2.68      77       71

Best Double Couple:Mo=2.6*10**19
 NP1:Strike=317 Dip=33 Slip= -97
 NP2:       145     57       -85

Moment Tensor Solution
The figure above shows a visual representation of the faulting process derived from the estimated moment tensor. Shaded areas show quadrants of the focal sphere in which the P-wave first-motions are away form the source, and unshaded areas show quadrants in which the P-wave first-motions are toward the source. The two circles represent the axis of maximum compressional strain resulting from the earthquake (in black, called the "P-axis") and the axis of maximum extensional strain (in white, called the "T-axis").

Moment Tensor Solution