USGS WPhase Moment Solution
NEAR EAST COAST OF HONSHU, JAPAN
11/ 9/16 19:26:42.00 Epicenter: 40.288 142.727 MW 6.7 USGS/WPHASE CENTROID MOMENT TENSOR 11/ 9/16 19:26:42.00 Centroid: 40.288 143.251 Depth 15 No. of sta: 44 Moment Tensor; Scale 10**19 Nm Mrr= 0.72 Mtt=-0.04 Mpp=-0.67 Mrt= 0.44 Mrp= 1.02 Mtp=-0.20 Principal axes: T Val= 1.32 Plg=61 Azm=297 N = 0.01 3 201 P = -1.33 28 109 Best Double Couple:Mo=1.3*10**19 NP1:Strike=190 Dip=17 Slip= 79 NP2: 22 73 93
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.
