USGS/SLU Regional Moment Solution

SOUTHERN ITALY

13/02/16 21:16:12.59

Epicenter:  41.746   13.571
MW 4.8

USGS/SLU REGIONAL MOMENT TENSOR
Depth  21         No. of sta: 39
Moment Tensor;   Scale 10**16 Nm
  Mrr=-1.92       Mtt= 0.42
  Mpp= 1.51       Mrt= 0.76
  Mrp= 0.37       Mtp=-1.11
 Principal axes:
  T  Val=  2.20  Plg= 1  Azm= 58
  N        0.08      23      327
  P       -2.28      67      151

Best Double Couple:Mo=2.2*10**16
 NP1:Strike=169 Dip=48 Slip= -59
 NP2:       307     51      -120

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