The data from the active portion of the survey is still being downloaded from the various recording instruments. It will be placed in a common format, and made available to participating scientists by February 1, 2000. Both the permitting of this survey and the actual data acquisition were significant tasks that were accomplished successfully. The landowners included federal, state, county, and city governments, school districts, utility companies, and private landowners. The shots and seismographs were located in national forests, parks, golf courses, utility easements, schoolyards, and private fields.
Preliminary plots indicate the data are generally quite good, and some are remarkable.
Travel time and amplitude anomalies are visible in first arrivals near the San Andreas fault, and reflections are visible raw shot gathers from the middle and lower crust. An analysis of aftershock data from the Northridge earthquake, indicates that the target structure may be somewhere in the 0 - 2 km depth range in the survey area. Receiver function analysis of the multi-component passive data recorded has been analyzed to look for the structure of the Moho. In January 1999, Version 1 of the standard 3D velocity model was released. This version contained the major basins of the greater Los Angeles area.