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SSIP - Salton Seismic Imaging Project

Time frame

  • 2011 - 2018



Principal Investigators

  • John Hole (Virginia Tech), Joann Stock (CALTECH), Gary Fuis (USGS), Neal Discroll, Graham Kent, Simon Klemperer, Antonio Gonzalez-Fernandez, Octavio Lazaro-Mancilla


  • Klaus Bauer (GFZ Potsdam)
  • Trond Ryberg (GFZ Potsdam)


  • USGS Menlo Park, CALTECH, Virginia Tech, University of Louisiana

Methods & Equipment

  • seismic Pre-stack Depth Migration (Bauer et al., 2013)


  • We derived direct images of sub-vertical fault structures of the San Andreas fault system in the northern Salton Trough (Southern California). The SAF is imaged along Line 4, through the Mecca Hills, as a number of steeply dipping fault segments that collectively form a flower structure, above 5 km depth, that sole into a moderately NE-dipping fault below that depth.
  • Fuis, G.S., Bauer K., Goldman, M.R., Ryberg, T., Langenheim, V.E., Scheier, D.S., Rymer, M.J., Stock, J.M., Hole, J.A., Catchings, R.D. Graves, R.W., Aagaard, B. (2017): Subsurface Geometry of the San Andreas Fault in Southern California: Results from the Salton Seismic Imaging Project (SSIP) and Strong Ground Motion Expectations. Bulletin of the Seismological Society of America, 107(4), 1642-1662. http://doi.org/10.1785/0120160309


  • SSIP is supported by National Science Foundation (NFS), U.S. Geological Survey (USGS) and Southern California Earthquake Center (SCEC).
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