USGS Body-Wave Moment Tensor Solution

OFF COAST OF OREGON

13/02/27 22:25:44.07

Epicenter:  43.115 -126.443
MW 5.2

USGS MOMENT TENSOR SOLUTION
Depth   9         No. of sta:  9
Moment Tensor;   Scale 10**16 Nm
  Mrr=-0.15       Mtt=-3.42
  Mpp= 3.57       Mrt=-3.06
  Mrp=-0.45       Mtp=-5.41
 Principal axes:
  T  Val=  6.70  Plg=10  Azm=239
  N        0.82      66      126
  P       -7.52      22      333

Best Double Couple:Mo=7.2*10**16
 NP1:Strike=108 Dip=82 Slip=-157
 NP2:        14     68        -9

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