About Us

The NEES@UCSB (now primarily funded by the NRC) facility consists of permanently-instrumented geotechnical test sites designed to improve our understanding of the effects of surface geology on strong ground motion. The instrumentation at these sites includes surface and borehole arrays of accelerometers and pore pressure transducers designed to record strong ground motions, excess pore pressure generation and liquefaction that occurs during large earthquakes.
An instrumented structure (at the GVDA site) is also monitored to improve our understanding of soil-foundation-structure interaction (SFSI) effects.

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​The UCSB Geotechnical Array monitoring program is jointly funded by Pacific Gas & Electric Company and the United States Geological Survey.

This site previously funded 2015 to 2017 by the NRC Contract#NRC-HQ-60-15-C-000, project title "Observations and Analysis of Geotechnical Data". And 2004 to 2014 by the Geoge E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Earthquake Hazards Reduction Program (NEHRP) of the National Science Foundation (NSF) under Award# CMMI-0927178.