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Precise geodesy with the Very Long Baseline Array |
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| Authors: | Leonid Petrov David Gordon John Gipson Dan MacMillan Chopo Ma Ed Fomalont R Craig Walker Claudia Carabajal |
| Institution: | (1) ADNET Systems Inc./NASA GSFC, Code 610.2, Greenbelt, MD 20771, USA;(2) NVI Inc./NASA GSFC, Code 698, Greenbelt, MD 20771, USA;(3) NASA GSFC, Code 698, Greenbelt, MD 20771, USA;(4) National Radio Astronomy Observatory, 520 Edgemont Rd, Charlottesville, VA 22903-2475, USA;(5) National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801, USA;(6) Sigma Space Corporation/NASA GSFC, Code 698, Greenbelt, MD 20771, USA |
| Abstract: | We report on a program of geodetic measurements between 1994 and 2007 which used the Very Long Baseline Array (VLBA) and up to ten globally distributed antennas. One of the goals of this program was to monitor positions of the array at a 1 mm level of accuracy and to tie the VLBA into the international terrestrial reference frame. We describe the analysis of these data and report several interesting geophysical results including measured station displacements due to crustal motion, earthquakes, and antenna tilt. In terms of both formal errors and observed scatter, these sessions are among the very best geodetic very long baseline interferometry experiments. |
| Keywords: | VLBI Coordinate systems Plate tectonics VLBA |
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