USGS Body-Wave Moment Tensor Solution

OFF COAST OF OREGON

12/02/15 03:31:20.09

Epicenter:  43.615 -127.512
MW 5.8

USGS MOMENT TENSOR SOLUTION
Depth  10         No. of sta: 27
Moment Tensor;   Scale 10**17 Nm
  Mrr=-0.60       Mtt=-3.06
  Mpp= 3.67       Mrt=-1.72
  Mrp= 0.72       Mtp=-3.73
 Principal axes:
  T  Val=  5.63  Plg=13  Azm=244
  N       -0.53      69      119
  P       -5.10      16      338

Best Double Couple:Mo=5.4*10**17
 NP1:Strike=112 Dip=87 Slip=-159
 NP2:        21     69        -3

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