USGS Body-Wave Moment Tensor Solution
NORTHERN MID-ATLANTIC RIDGE
13/06/24 22:04:13.53 Epicenter: 10.719 -42.624 MW 6.4 USGS MOMENT TENSOR SOLUTION Depth 8 No. of sta: 88 Moment Tensor; Scale 10**18 Nm Mrr=-0.08 Mtt=-0.43 Mpp= 0.50 Mrt= 0.72 Mrp= 0.89 Mtp=-4.57 Principal axes: T Val= 4.63 Plg= 2 Azm=228 N 0.19 76 327 P -4.82 13 138 Best Double Couple:Mo=4.7*10**18 NP1:Strike=182 Dip=82 Slip= -11 NP2: 274 79 -172
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.