USGS Body-Wave Moment Tensor Solution

PAGAN REG., N. MARIANA ISLANDS

13/05/14 00:32:25.82

Epicenter:  18.760  145.288
MW 6.8

USGS MOMENT TENSOR SOLUTION
Depth 605         No. of sta: 49
Moment Tensor;   Scale 10**19 Nm
  Mrr=-1.13       Mtt=-0.58
  Mpp= 1.71       Mrt=-1.52
  Mrp= 0.06       Mtp=-0.94
 Principal axes:
  T  Val=  2.17  Plg=12  Azm=245
  N        0.31      40      145
  P       -2.48      48      348

Best Double Couple:Mo=2.3*10**19
 NP1:Strike= 13 Dip=48 Slip= -30
 NP2:       125     68      -134

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