USGS Centroid Moment Solution
BANDA SEA
11/08/30 06:57:41.51 Epicenter: -6.398 126.790 MW 6.9 USGS CENTROID MOMENT TENSOR 11/08/30 06:58:01.40 Centroid: -6.728 126.911 Depth 451 No. of sta: 48 Moment Tensor; Scale 10**19 Nm Mrr=-0.79 Mtt= 0.03 Mpp= 0.76 Mrt= 0.65 Mrp= 2.22 Mtp=-0.08 Principal axes: T Val= 2.38 Plg=36 Azm=280 N 0.12 6 14 P -2.49 53 112 Best Double Couple:Mo=2.4*10**19 NP1:Strike=340 Dip=11 Slip=-124 NP2: 195 81 -84
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.
