USGS Body-Wave Moment Tensor Solution

NIAS REGION, INDONESIA

13/04/05 17:35:30.78

Epicenter:   0.281   98.666
MW 5.0

USGS MOMENT TENSOR SOLUTION
Depth  35         No. of sta: 20
Moment Tensor;   Scale 10**16 Nm
  Mrr= 3.71       Mtt=-0.66
  Mpp=-3.05       Mrt= 1.67
  Mrp=-0.80       Mtp= 2.06
 Principal axes:
  T  Val=  4.27  Plg=72  Azm=  3
  N        0.25      15      145
  P       -4.52      11      238

Best Double Couple:Mo=4.4*10**16
 NP1:Strike=346 Dip=37 Slip= 115
 NP2:       135     57        72

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