USGS Centroid Moment Solution
NEW GUINEA, PAPUA NEW GUINEA
12/03/21 22:15:05.48 Epicenter: -6.224 145.939 MW 6.6 USGS CENTROID MOMENT TENSOR 12/03/21 22:15:19.50 Centroid: -6.648 146.167 Depth 109 No. of sta: 40 Moment Tensor; Scale 10**18 Nm Mrr=-6.04 Mtt= 7.16 Mpp=-1.13 Mrt=-2.95 Mrp=-2.07 Mtp=-5.25 Principal axes: T Val= 9.91 Plg= 7 Azm=204 N -1.57 34 110 P -8.34 56 304 Best Double Couple:Mo=9.1*10**18 NP1:Strike= 87 Dip=60 Slip=-130 NP2: 326 48 -42
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.