A Deep Earthquake Catalog for Oklahoma and Southern Kansas Reveals
Extensive Basement Fault Networks
Abstract
The successful application of deep learning for seismic phase arrival
time picking has increased the efficacy of earthquake catalog
development workflows. Earthquake catalogs with lower magnitude of
completeness and better locational precision than current standard
practice can now be generated with very limited need for human review
and without the need for earthquake templates, which are not always
available. Here, we report on a ‘Deep Earthquake Catalog’ with over
300,000 events from a geographically extensive region spanning Oklahoma
and Southern Kansas from January 2010 to December 2020 developed using a
workflow that leverages deep learning for phase picking. The increased
number of events and improved spatial resolution compared to the
previous statewide catalogs reveals numerous discrete faults and both
broad trends and localized patterns of seismicity. This rich dataset
provides new opportunities for data-driven analyses of induced
earthquakes.