USGS Body-Wave Moment Tensor Solution
KAMCHATKA PENINSULA, RUSSIA
13/03/13 03:12:52.23 Epicenter: 60.256 163.400 MW 5.8 USGS MOMENT TENSOR SOLUTION Depth 4 No. of sta:109 Moment Tensor; Scale 10**17 Nm Mrr= 3.12 Mtt= 0.27 Mpp=-3.39 Mrt=-0.73 Mrp=-2.72 Mtp= 3.26 Principal axes: T Val= 4.95 Plg=53 Azm=135 N 0.82 34 342 P -5.77 13 243 Best Double Couple:Mo=5.4*10**17 NP1:Strike=297 Dip=43 Slip= 36 NP2: 179 66 127
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.