HR: 1340h
AN: G33A-0909    [Abstracts]
TI: Support of EarthScope GPS Campaigns at the UNAVCO Facility
AU: * Boyce, E
EM: boyce@unavco.org
AF: UNAVCO, 6350 Nautilus Dr, Boulder, CO 80301, United States
AU: Blume, F
EM: blume@unavco.org
AF: UNAVCO, 6350 Nautilus Dr, Boulder, CO 80301, United States
AU: Normandeau, J
EM: normandeau@unavco.org
AF: UNAVCO, 6350 Nautilus Dr, Boulder, CO 80301, United States
AB: In order to support portable GPS deployments funded by the NSF's EarthScope Science panel, PBO has purchased 100 campaign GPS systems. Based Topcon GB-1000 equipment, the systems have been designed for stand-alone temporary or semi-permanent deployment that will be used for densifying areas not sufficiently covered by continuous GPS, and responding to volcanic and tectonic crises. UNAVCO provides support for all aspects of these projects, including proposal and budget development, project planning, equipment design, field support, and data archiving. Ten of the 100 systems will be purchased with real-time kinematic (RTK) capability requiring additional radio and data logging equipment. RTK systems can be used to rapidly map fault traces and profile fault escarpments and collect precise position information for GIS based geologic mapping. Each portable self-contained campaign systems include 18 Ah batteries, a regulated 32 watt solar charging system, and a low-power dual frequency GPS receiver and antenna in a waterproof case with security enhancements. The receivers have redundant memory sufficient for storing over a year's worth of data as well as IP and serial communications capabilities for longer-term deployments. Monumentation options are determined on a project-by-project basis, with options including Tech2000 masts, low-profile spike mounts, and traditional tripods and optical tribrachs. Drilled-braced monuments or masts can be installed for "semi-permanent" style occupations. The systems have been used to support several projects to date, including the University of Washington's 30- unit deployment to monitor the Episodic Tremor and Slip event in November, 2005 and the ongoing Rio Grande Rift experiment, run by the Universities of Colorado, Utah State, and New Mexico, which has seen the construction of 25 permanent monuments in 2006 and 2007.
UR: http://facility.unavco.org/project_support/es/pbo-camp/pbo-camp.html
DE: 1209 Tectonic deformation (6924)
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
DE: 1294 Instruments and techniques
DE: 1299 General or miscellaneous (1709)
SC: Geodesy [G]
MN: 2007 Fall Meeting