Improving out of network earthquake locations using prior seismicity for use in earthquake early warning

Published in BSSA, 2023

alt text In order to better constrain location solutions in this region, we propose to include information about contemporary past seismicity into EPIC’s grid search algorithm through a Bayesian framework. This prior information layer down-weights high error locations where EPIC’s proposed event location coincides with an area of low prior seismicity in preference for locations with a similar level of data fit that also have higher past seismicity. This addition to EPIC lowers the mean location error offshore northern California from 58 km to 14 km.

You can read the pre-print of this paper here.