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Preseismic velocity changes observed from active source monitoring at the Parkfield SAFOD drill site

Geotechnical EngineeringGeophysicsGround MotionEarthquake EngineeringEngineeringPreseismic Velocity ChangesSeismic WaveSeismologyParkfield SafodInduced SeismicityActive Source MonitoringInstrumentationEarth ScienceDrillingDrilling Engineering