USGS Body-Wave Moment Tensor Solution

KERMADEC ISLANDS, NEW ZEALAND

13/02/18 16:32:50.03

Epicenter: -30.643 -178.106
MW 5.8

USGS MOMENT TENSOR SOLUTION
Depth  70         No. of sta:  9
Moment Tensor;   Scale 10**17 Nm
  Mrr= 2.83       Mtt=-1.59
  Mpp=-1.24       Mrt= 4.44
  Mrp=-0.89       Mtp=-2.30
 Principal axes:
  T  Val=  6.12  Plg=53  Azm= 26
  N       -1.13      26      256
  P       -4.99      25      154

Best Double Couple:Mo=5.6*10**17
 NP1:Strike=203 Dip=31 Slip=  32
 NP2:        84     74       117

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