|October 7, 2005
GPS Collaboration Adds SLAC to Plate Boundary
By Brian Fuss
SLAC has joined the solid earth research community. After months
of discussions and organization between Frederick Blume of the
University NAVSTAR Consortium (UNAVCO), Catherine LeCocq (AEG), and
Operations director John Cornuelle (COO), SLAC’s Global Positioning
System (GPS) base-station was added as a significant contributor to
the Plate Boundary Observatory (PBO) on September 26th.
This geodetic program is part of the EarthScope project funded by
the National Science Foundation studying the three-dimensional
strain field resulting from deformation across active plate
boundaries in the Western United States. The Pacific and North
American plates are observed using an array of GPS receivers and
strainmeters deducing the strain field with varying timescales
ranging from days to decades.
LeCocq looks at this cooperation as another example of SLAC’s
expanding interest in new areas of scientific study. “We will have a
fully maintained GPS base-station with limited cost to SLAC plus the
satisfaction of contributing to UNAVCO’s high-precision geodetic
network of GPS stations.” This station has been used for the past
three years to map features of the SLAC campus for CEF and for
various projects such as LCLS.
The real-time data generated by the base-station can be seen at
and further information on UNAVCO can be found at http://www.unavco.org/.
The Stanford Linear Accelerator Center is managed
by Stanford University for the US Department of