Error distribution when using first-break arrival times to locate microseismic events

Baolin Qiao and John C. Bancroft


SVD method was used to estimate 3D hypocenter location and origin time of a microseismic event. Given variance of observed first-break arrival time, 3D error distribution of hypocenter location is calculated. It is shown that uncertainty in vertical direction is much bigger than that in horizontal directions.

View full article as PDF (0.78 Mb)