USGS Body-Wave Moment Tensor Solution
HINDU KUSH REGION, AFGHANISTAN
13/04/04 06:31:32.16 Epicenter: 36.414 71.099 MW 5.3 USGS MOMENT TENSOR SOLUTION Depth 243 No. of sta: 49 Moment Tensor; Scale 10**17 Nm Mrr= 1.10 Mtt=-0.74 Mpp=-0.36 Mrt= 0.23 Mrp= 0.61 Mtp=-0.39 Principal axes: T Val= 1.33 Plg=71 Azm=277 N -0.21 13 49 P -1.11 14 142 Best Double Couple:Mo=1.2*10**17 NP1:Strike= 41 Dip=60 Slip= 75 NP2: 250 33 115
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.