SLA is the downtown Seattle array in conjuction with the University of Washington (UW) and USGS. It was installed  Feb ~25th 2012

See the 'Instrumentation' tab below for details of the sensors and data-loggers, including a cross-section diagram of the installation.



​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.