PhillipsFallAGU2004 by welcomegong1


									Session G01: General Geodesy

The Campaign GPS Component of the Plate Boundary Observatory (PBO): New
Tools, New Strategies and New Opportunities to Support EarthScope Investigations

David A. Phillips, Jim Greenberg, Jay Sklar, Charles M. Meertens, Victoria Andreatta,
and Karl Feaux (all UNAVCO)
The UNAVCO Facility is charged with implementing the campaign GPS component of the Plate Boundary
Observatory (PBO) to support EarthScope investigators through a pool of approximately one hundred
mobile GPS systems. In contrast to the PBO continuous GPS network, the PBO campaign systems are
designed for temporary deployments with periods ranging from several minutes to several months per site.
This allows researchers to conduct spatially and temporally focused investigations into a wide range of
phenomena, including volcano monitoring, post-seismic deformation monitoring, and ground control for
airborne LIDAR surveys. A standard PBO campaign system consists of a Topcon GB-1000 dual-frequency
GPS receiver, a Topcon PG-A1 compact GPS antenna, an 18 Ah battery, cabling, a portable and waterproof
Pelican case enclosure, and a Tech 2000 GPS antenna mast or tripod and tribrach. Available ancillary
equipment includes solar panels, additional batteries, enclosures and mounting hardware. Communications
equipment such as radio modems and cellular modems are also available to allow remote data retrieval
during longer term deployments. We present an overview of the PBO campaign equipment available to
investigators, technical specifications of the system, examples of current and planned EarthScope research
projects utilizing the campaign equipment, and a hands-on demonstration of a PBO campaign system.

To top