GPS in earthquakes studies A perfect example of this three-part system in application is the Southern California Integrated GPS Network (SCIGN.) SCIGN is a network of continuously recording GPS receivers throughout Southern California that have been installed in an array to monitor the strain accumulation in Southern California's crust. This is done with the help of the highly accurate measurements made by the GPS system which allow scientists to record millimeter-scale slip on faults that cannot ordinarily be measured. Understanding of area seismicity could lead to a better understanding of the mechanics behind earthquakes and to better assessment of earthquake hazards and damage estimates. Scientists from NASA/JPL, Scripps Institution of Oceanography, and the U.S. Geological Survey use the data from this array to determine if small-scale motion on faults between earthquakes can indicate precursor signs to an event that may help to predict where and when an earthquake will likely occur. In the near future, this network will act as a key in the improvement of emergency preparedness and response; determining of aftershock risk areas following major earthquakes; helping prevent destruction of buildings, property and infrastructure; advancing the understanding of the earthquake process; providing better geophysical models; and the opening of new directions in the field of solid earth dynamics.