USGS/SLU Regional Moment Solution

 11/02/18 08:13:35.29
 ARKANSAS                        
 Epicenter:  35.271  -92.378
 MW 4.1

 USGS/SLU REGIONAL MOMENT TENSOR
 Depth   5         No. of sta: 22
 Moment Tensor;   Scale 10**14 Nm
   Mrr=-0.21       Mtt= 8.65
   Mpp=-8.44       Mrt=-7.25
   Mrp=-3.04       Mtp= 9.88
  Principal axes:
   T  Val= 16.80  Plg=25  Azm=156
   N       -3.83      65      332
   P      -12.96       1       65

 Best Double Couple:Mo=1.5*10**15
  NP1:Strike=198 Dip=72 Slip= 163
  NP2:       293     74        19
                                      
                                      

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 form 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