USGS WPhase Moment Solution
MYANMAR-INDIA BORDER REGION
13/01/09 1:41:52 Epicenter: 25.340 94.970 MW 5.8 USGS/WPHASE CENTROID MOMENT TENSOR 13/01/09 01:41:52.00 Centroid: 25.240 94.970 Depth 100 No. of sta: 42 Moment Tensor; Scale 10**17 Nm Mrr= 5.39 Mtt=-4.43 Mpp=-0.96 Mrt= 0.26 Mrp=-2.52 Mtp= 2.59 Principal axes: T Val= 6.31 Plg=69 Azm= 99 N = -0.31 19 303 P = -6.00 7 210 Best Double Couple:Mo=6.2*10**17 NP1:Strike=280 Dip=41 Slip= 60 NP2: 137 55 113
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.
