USGS Body-Wave Moment Tensor Solution
NEAR EAST COAST OF HONSHU, JAPAN
12/10/25 10:32:27.38 Epicenter: 38.295 141.718 MW 5.7 USGS MOMENT TENSOR SOLUTION Depth 40 No. of sta: 81 Moment Tensor; Scale 10**17 Nm Mrr= 2.36 Mtt= 0.64 Mpp=-3.00 Mrt= 1.55 Mrp= 2.06 Mtp=-0.67 Principal axes: T Val= 3.63 Plg=62 Azm=330 N 0.36 18 202 P -3.99 21 105 Best Double Couple:Mo=3.8*10**17 NP1:Strike= 30 Dip=68 Slip= 109 NP2: 167 29 50
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.