USGS Centroid Moment Solution

E. RUSSIA-N.E. CHINA BORDER REG.

13/04/05 13:00:02.86

Epicenter:  42.712  131.113
MW 6.3

USGS CENTROID MOMENT TENSOR
13/04/05 13:00:19.70
Centroid:  42.762  130.904
Depth 563         No. of sta: 94
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.76       Mtt=-0.27
  Mpp=-0.50       Mrt= 0.16
  Mrp=-2.99       Mtp= 0.57
 Principal axes:
  T  Val=  3.20  Plg=50  Azm= 96
  N       -0.18      10      354
  P       -3.03      38      256

Best Double Couple:Mo=3.1*10**18
 NP1:Strike=297 Dip=12 Slip=  33
 NP2:       175     84       100

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