OKSSEN ( OQ network )



The Oklahoma Structural and Site Effects Network (OKSSEN) monitors a 12 story reinforced concrete structure on Oklahoma State University campus in Stillwater, OK, in a region that has seen a sharp increase in earthquakes associated with injection of wastewater from oil production into the subsurface. The project provides data to determine whether current methods for estimating the seismic hazard and structural response are reliable for typical buildings in Oklahoma that were built at a time when seismic safety was not considered in their design. The project will also develop new estimates of the ground motion levels that may be experienced at the site, taking into account local geologic conditions, so that these can be used to assess whether the structure may be likely to be damaged in future earthquakes.i

The project includes:

  • Recording earthquakes at the ground level and estimating any amplification due to soil conditions.
  • Recording motions at the rooftop and assessing the response of the structure to shaking from Magnitude 4 and greater earthquakes that have occurred.
  • Constructing a computational model of the building structure to understand the structural response.
  • Rapidly assessing impacts of future earthquakes.
  • Monitoring larger earthquakes with high precision GPS to detect any permanent deformation of the structure.
  • Developing cyberinfrastructure for real-time transmission of accelerometer and GPS data to support the research.
  • The project is a collaboration between the Scripps Institution of Oceanography at the University of California, San Diego, and the Oklahoma State University, funded by the National Science Foundation Cyberinfrastructure for Sustained Scientific Innovation.

    OKSSEN Work