A new strategy for earthquake focal mechanisms using waveform-correlation-derived relative polarities and cluster analysis: Application to a fluid-driven earthquake swarm

David R Shelly1, Jeanne Hardebeck2, William L Ellsworth3 and David P Hill1, (1)US Geological Survey, Menlo Park, CA, United States, (2)U.S. Geological Survey, Earthquake Science Center, Moffett Field, United States, (3)Stanford University, Department of Geophysics, Stanford, CA, United States