USGS Body-Wave Moment Tensor Solution

NEAR EAST COAST OF HONSHU, JAPAN

13/05/18 05:47:59.11

Epicenter:  37.745  141.494
MW 5.9

USGS MOMENT TENSOR SOLUTION
Depth  35         No. of sta:101
Moment Tensor;   Scale 10**17 Nm
  Mrr= 5.95       Mtt=-1.68
  Mpp=-4.27       Mrt= 3.04
  Mrp= 5.08       Mtp=-1.52
 Principal axes:
  T  Val=  8.56  Plg=66  Azm=303
  N       -1.01       2      208
  P       -7.55      24      117

Best Double Couple:Mo=8.1*10**17
 NP1:Strike= 29 Dip=69 Slip=  92
 NP2:       202     21        84

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