USGS/SLU Regional Moment Solution

13/02/26 17:07:34.91

Epicenter:  19.153  -67.910
MW 4.9

USGS/SLU REGIONAL MOMENT TENSOR
Depth  27         No. of sta: 40
Moment Tensor;   Scale 10**16 Nm
  Mrr= 0.84       Mtt=-0.05
  Mpp=-0.79       Mrt=-0.82
  Mrp= 2.53       Mtp= 1.48
 Principal axes:
  T  Val=  2.70  Plg=52  Azm=279
  N        0.76      20      161
  P       -3.47      31       59

Best Double Couple:Mo=3.2*10**16
 NP1:Strike=103 Dip=23 Slip=  30
 NP2:       345     79       110

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