USGS Centroid Moment Solution

PAGAN REG., N. MARIANA ISLANDS

13/05/14 00:32:25.82

Epicenter:  18.760  145.288
MW 6.8

USGS CENTROID MOMENT TENSOR
13/05/14 00:32:38.20
Centroid:  18.601  145.268
Depth 606         No. of sta: 59
Moment Tensor;   Scale 10**19 Nm
  Mrr=-1.05       Mtt=-0.70
  Mpp= 1.75       Mrt=-1.24
  Mrp= 0.00       Mtp=-0.81
 Principal axes:
  T  Val=  2.04  Plg= 8  Azm=250
  N        0.16      42      153
  P       -2.20      46      348

Best Double Couple:Mo=2.1*10**19
 NP1:Strike= 18 Dip=53 Slip= -32
 NP2:       128     65      -138

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