USGS Body-Wave Moment Tensor Solution

ALAMAGAN REG, N. MARIANA ISLANDS

12/11/27 07:34:27.21

Epicenter:  17.684  145.715
MW 5.4

USGS MOMENT TENSOR SOLUTION
Depth 192         No. of sta: 30
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.81       Mtt= 0.17
  Mpp=-0.98       Mrt=-0.42
  Mrp= 1.13       Mtp=-0.20
 Principal axes:
  T  Val=  1.51  Plg=58  Azm=232
  N        0.01      17      352
  P       -1.53      26       90

Best Double Couple:Mo=1.5*10**17
 NP1:Strike=346 Dip=73 Slip=  72
 NP2:       213     25       135

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