USGS/SLU Regional Moment Solution

 11/02/28 05:00:50   
 ARKANSAS                        
 Epicenter:  35.260  -92.340
 MW 4.7

 USGS/SLU REGIONAL MOMENT TENSOR
 Depth   4         No. of sta: 24
 Moment Tensor;   Scale 10**15 Nm
   Mrr=-0.35       Mtt= 9.22
   Mpp=-8.87       Mrt= 0.01
   Mrp=-2.27       Mtp= 7.36
  Principal axes:
   T  Val= 11.88  Plg= 4  Azm=160
   N        0.00      79       52
   P      -11.88      11      251

 Best Double Couple:Mo=1.2*10**16
  NP1:Strike= 26 Dip=85 Slip=-170
  NP2:       295     80        -5
                                      
                                      

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