USGS Body-Wave Moment Tensor Solution

KEP. MENTAWAI REGION, INDONESIA

12/09/14 04:51:47.41

Epicenter:  -3.353  100.603
MW 6.2

USGS MOMENT TENSOR SOLUTION
Depth  22         No. of sta: 71
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.59       Mtt=-1.07
  Mpp=-0.51       Mrt= 1.52
  Mrp=-0.96       Mtp= 0.24
 Principal axes:
  T  Val=  2.49  Plg=63  Azm= 35
  N       -0.45       3      299
  P       -2.04      26      207

Best Double Couple:Mo=2.3*10**18
 NP1:Strike=289 Dip=19 Slip=  80
 NP2:       120     71        94

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