Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989itim...38..680h&link_type=abstract
(Society of Instrument and Control Engineers of Japan, IEEE, URSI, et al., Conference on Precision Electromagnetic Measurements,
Astronomy and Astrophysics
Astronomy
1
Geodetic Surveys, Plates (Tectonics), Very Long Base Interferometry, Error Analysis, Pacific Ocean, Radio Sources (Astronomy)
Scientific paper
The baseline length changing rates predicted by plate motion models and those observed in global very-long-baseline interferometry (VBLI) are compared. A widely distributed 1979-1986 baseline length data set shows the rates to be in good agreement with the predictions. The deviations from the predicted rates, however, are found to have a negative correlation (significant at more than 99.99 percent by t-test) with the baseline lengths, as if the whole region were secularly contracting. The authors' analyses for 15 circumpacific and transpacific baselines in joint Japan-U.S. VLBI experiments since 1984 reproduce a similar apparent uniform contraction.
Heki Kosuke
Kondo Tetsuro
Takahashi Yukio
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