Precise geodesy with the Very Long Baseline Array

Abstract

We report on a program of geodetic measurements between 1994 and 2007 which used the Very Long Baseline Array and up to 10 globally distributed antennas. One of the goals of this program was to monitor positions of the array at a 1 millimeter 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 VLBI experiments.

Published in the Journal of Geodesy; 18 pages, 10 figures

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• Study of the atmospheric pressure loading signal in VLBI observations
• Opacity in compact extragalactic radio sources and its effect on astrophysical and astrometric studies
• Relativistic Jets in The Radio Reference Frame Image Database I: Apparent Speeds from the First Five Years of Data
• The empirical Earth rotation model from VLBI observations

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