Using waveform correlation and template event metadata to reduce analyst workload.

We use waveform templates from stations that are within regional distance of aftershock sequences to detect subsequent events , then use template ev ent metadata to discover what stations are likely to record corroborating arrival waveforms for recurring aftershock events at the same location , and develop additional waveform templates to seek corroborating detections. We evaluate the results with the goal of determining whether applying the method to aftershock events will improve the choice of waveform correlation detections that lead to bulletin - worthy events and reduction of analyst effort.