USGS Body-Wave Moment Tensor Solution

 11/02/10 14:39:28.86
 CELEBES SEA                     
 Epicenter:   4.179  122.997
 MW 6.5

 Depth 518         No. of sta: 26
 Moment Tensor;   Scale 10**18 Nm
   Mrr=-4.92       Mtt= 1.64
   Mpp= 3.27       Mrt=-2.79
   Mrp=-5.82       Mtp= 3.13
  Principal axes:
   T  Val=  8.66  Plg=25  Azm=124
   N       -0.61       7       30
   P       -8.07      64      286

 Best Double Couple:Mo=8.4*10**18
  NP1:Strike=230 Dip=21 Slip= -69
  NP2:        28     71       -98

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