Permanently Instrumented Field Sites
Earthquake Monitoring and Experimental Testing
The NEES@UCSB 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 is also monitored to improve our understanding of
soil-foundation-structure interaction (SFSI) effects.
Located in the Imperial Valley of Southern California within the Imperial Wildlife Management Area, the Wildlife Liquefaction
Array is a fully instrumented site in an area that has historically produced
significant ground motion and liquefaction effects. more
The Garner Valley Array is a thoroughly characterized strong motion monitoring site with surface accelerometers, borehole
pore pressure transducers and accelerometers, and an extensively instrumented Soil Foundation Structure Interaction (SFSI)
test facility. The Garner Valley array records earthquakes on a daily
basis, and is also used in active testing experiments. more
NEWS! - August 2011
As a part of the NEESR Grand Challenge project "Mitigation of Collapse Risk in Vulnerable Concrete Buildings", a second experimental
test structure was deployed along side the permanent structure at the Garner Valley field site. Braced testing of this structure
took place in June 2011 with REU students on hand to watch. Unbraced testing took place the first week of August 2011. Analysis
of the data from these tests, along with previous tests of this same structure at the WLA field site, will be used to develop
a master SSI model.
DATA PORTAL STATUS:
The data portal is up and running! You can search, view, and download earthquake data from the permanent field sites by navigating
to the "Data" tab above, or by clicking the quick link below.
Data Portal Tutorial
Data Portal
This project is supported by the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES)
Program of the National Science Foundation under Award Numbers
CMS-0217421,
CMS-0402490, and CMMI-0927178.
Remote site communications are made possible by the HPWREN program at UC San Diego,
NSF grant numbers 0087344
and 0426879