USGS Body-Wave Moment Tensor Solution

VANUATU

 11/03/17 02:47:59.59
 VANUATU                         
 Epicenter: -17.339  167.743
 MW 6.1

 USGS MOMENT TENSOR SOLUTION
 Depth  14         No. of sta: 52
 Moment Tensor;   Scale 10**18 Nm
   Mrr= 1.55       Mtt= 0.11
   Mpp=-1.66       Mrt= 0.21
   Mrp=-0.83       Mtp= 0.36
  Principal axes:
   T  Val=  1.76  Plg=76  Azm= 72
   N        0.18       1      168
   P       -1.94      14      259

 Best Double Couple:Mo=1.9*10**18
  NP1:Strike=351 Dip=31 Slip=  93
  NP2:       167     59        88
                                      
                                      

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