USGS Body-Wave Moment Tensor Solution

SOUTH ISLAND OF NEW ZEALAND

13/08/16 02:31:08.10

Epicenter: -41.722  173.987
MW 6.5

USGS MOMENT TENSOR SOLUTION
Depth  14         No. of sta: 46
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.26       Mtt= 4.28
  Mpp=-5.54       Mrt=-1.78
  Mrp= 1.33       Mtp=-2.89
 Principal axes:
  T  Val=  5.99  Plg=24  Azm=197
  N        0.43      65        0
  P       -6.42       6      104

Best Double Couple:Mo=6.2*10**18
 NP1:Strike=238 Dip=69 Slip= 167
 NP2:       333     78        22

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