USGS Body-Wave Moment Tensor Solution

BISMARCK SEA

12/11/15 08:21:49.43

Epicenter:  -3.255  148.179
MW 5.8

USGS MOMENT TENSOR SOLUTION
Depth   6         No. of sta: 41
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.99       Mtt= 3.57
  Mpp=-4.56       Mrt= 1.96
  Mrp= 2.12       Mtp= 5.04
 Principal axes:
  T  Val=  7.17  Plg=24  Azm=333
  N       -0.04      65      173
  P       -7.12       8       66

Best Double Couple:Mo=7.2*10**17
 NP1:Strike= 17 Dip=79 Slip= 157
 NP2:       112     67        12

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