USGS Body-Wave Moment Tensor Solution

NEAR EAST COAST OF HONSHU, JAPAN

12/10/25 10:32:27.38

Epicenter:  38.295  141.718
MW 5.7

USGS MOMENT TENSOR SOLUTION
Depth  40         No. of sta: 81
Moment Tensor;   Scale 10**17 Nm
  Mrr= 2.36       Mtt= 0.64
  Mpp=-3.00       Mrt= 1.55
  Mrp= 2.06       Mtp=-0.67
 Principal axes:
  T  Val=  3.63  Plg=62  Azm=330
  N        0.36      18      202
  P       -3.99      21      105

Best Double Couple:Mo=3.8*10**17
 NP1:Strike= 30 Dip=68 Slip= 109
 NP2:       167     29        50

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