Strong-Motion-Instrument Installation Guide

Station Siting Criteria

When selecting sites to install strong-motion stations, we considered the following:

  • Population centers–most instruments are located in major population centers where people, buildings, and infrastructure are concentrated.
  • Active fault locations.
  • Geologic site conditions–to sample soil types (based on geology and Vs30 classifications) and other site conditions important to ground motions.
  • Locations relative to other strong-motion stations in operation.
  • Site where Vs30 measurements are available.
  • Critical facilities–it is useful to have instruments near important government, industrial, and transportation facilities.
  • National guidelines recommending that sites be in 1-2 story buildings less than 4000 sq. ft. in plan or in a “free-field” location away from large structures.
  • Telemetry constraints–current telemetry options are an Internet connection, digital subscriber line, cell phone, or spread-spectrum digital radio.
  • Protection from vandalism.

Our siting plans were reviewed by several local engineers, the USGS Ground-Motion Team, and the Utah Advisory Committee for Urban Strong-Motion Monitoring.

Information for Property Owners and Stakeholders site permit (in pdf format)

Technical Installation Details

NetQuakes Instruments: This is a new USGS strong-motion instrument for installation in private homes.