Were the 1952 Kern County and 1933 Long Beach, California, Earthquakes Induced?

Susan Elizabeth Hough1, Victor C Tsai2, Robert Lewis Walker II3, Morgan T Page1 and Fred Aminzadeh3, (1)USGS Pasadena Field Office, Pasadena, CA, United States, (2)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, (3)University of Houston, Houston, TX, United States