USGS Body-Wave Moment Tensor Solution
IRAN-PAKISTAN BORDER REGION
13/04/16 10:44:20.60 Epicenter: 28.080 62.051 MW 7.7 USGS MOMENT TENSOR SOLUTION Depth 82 No. of sta: 71 Moment Tensor; Scale 10**20 Nm Mrr=-3.31 Mtt= 3.29 Mpp= 0.02 Mrt= 1.32 Mrp= 1.32 Mtp= 1.53 Principal axes: T Val= 4.29 Plg=13 Azm=336 N -0.43 12 244 P -3.85 72 113 Best Double Couple:Mo=4.1*10**20 NP1:Strike=236 Dip=59 Slip=-104 NP2: 82 34 -68
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.