USGS Centroid Moment Solution

OFF EAST COAST OF HONSHU, JAPAN

11/07/10 00:57:12.63

Epicenter:  38.045  143.289
MW 7.0

USGS CENTROID MOMENT TENSOR
11/07/10 00:57:24.29
Centroid:  37.999  143.447
Depth  10         No. of sta: 101
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.01       Mtt=-2.58
  Mpp= 2.57       Mrt=-0.82
  Mrp= 1.85       Mtp= 1.88
 Principal axes:
  T  Val=  3.82  Plg=23  Azm=283
  N       -0.09      58      152
  P       -3.73      22       23

Best Double Couple:Mo=3.8*10**19
 NP1:Strike= 64 Dip=58 Slip=   1
 NP2:       333     89       148

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