USGS/SLU Regional Moment Solution


13/01/12 12:34:16.51

Epicenter:  23.954  122.408
MW 4.3

Depth  29         No. of sta: 17
Moment Tensor;   Scale 10**15 Nm
  Mrr= 1.79       Mtt=-2.72
  Mpp= 0.93       Mrt= 1.69
  Mrp= 1.25       Mtp= 0.28
 Principal axes:
  T  Val=  3.10  Plg=55  Azm=297
  N        0.19      28       77
  P       -3.29      19      178

Best Double Couple:Mo=3.2*10**15
 NP1:Strike=305 Dip=36 Slip= 143
 NP2:        66     69        60

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