USGS Body-Wave Moment Tensor Solution
OFF EAST COAST OF HONSHU, JAPAN
11/03/22 07:18:45.14 OFF EAST COAST OF HONSHU, JAPAN Epicenter: 37.269 143.956 MW 6.3 USGS MOMENT TENSOR SOLUTION Depth 17 No. of sta: 58 Moment Tensor; Scale 10**18 Nm Mrr=-2.26 Mtt= 0.49 Mpp= 1.77 Mrt=-0.71 Mrp=-0.28 Mtp= 2.43 Principal axes: T Val= 3.71 Plg= 6 Azm=128 N -1.24 20 220 P -2.47 69 21 Best Double Couple:Mo=3.3*10**18 NP1:Strike=197 Dip=42 Slip=-120 NP2: 55 54 -66
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 form 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.