USGS Body-Wave Moment Tensor Solution


12/12/28 17:32:17.24

Epicenter:  -0.245  122.940
MW 5.5

Depth  98         No. of sta: 21
Moment Tensor;   Scale 10**17 Nm
  Mrr= 1.17       Mtt=-0.79
  Mpp=-0.38       Mrt= 1.65
  Mrp=-0.74       Mtp= 0.53
 Principal axes:
  T  Val=  2.17  Plg=61  Azm= 19
  N       -0.04       4      117
  P       -2.13      29      210

Best Double Couple:Mo=2.1*10**17
 NP1:Strike=312 Dip=17 Slip= 106
 NP2:       116     74        85

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