USGS Body-Wave Moment Tensor Solution


13/05/01 06:57:12.75

Epicenter:  33.094   75.838
MW 5.4

Depth  16         No. of sta: 35
Moment Tensor;   Scale 10**17 Nm
  Mrr= 1.11       Mtt=-0.69
  Mpp=-0.42       Mrt= 1.04
  Mrp=-0.77       Mtp= 0.18
 Principal axes:
  T  Val=  1.77  Plg=63  Azm= 39
  N       -0.34       3      304
  P       -1.43      27      213

Best Double Couple:Mo=1.6*10**17
 NP1:Strike=296 Dip=18 Slip=  82
 NP2:       125     72        93

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