USGS Body-Wave Moment Tensor Solution


13/06/02 05:43:03.94

Epicenter:  23.799  121.102
MW 6.1

Depth  18         No. of sta: 82
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.58       Mtt= 0.06
  Mpp=-1.64       Mrt=-0.02
  Mrp=-0.84       Mtp=-0.95
 Principal axes:
  T  Val=  1.82  Plg=72  Azm= 63
  N        0.41      13      200
  P       -2.22      12      293

Best Double Couple:Mo=2.0*10**18
 NP1:Strike= 39 Dip=35 Slip= 113
 NP2:       192     58        75

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