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Joint Uses of VLBI with Astronomical Optical Instruments for Studying Vertical Changes

Published online by Cambridge University Press:  03 August 2017

Li Zhi-sen ,
Zhang Guo-dong  and
Han Yan-ben
Li Zhi-sen
Affiliation:
Beijing Astronomical Observatory, Academia Sinica, Beijing, People's Republic of China
Zhang Guo-dong
Affiliation:
Beijing Astronomical Observatory, Academia Sinica, Beijing, People's Republic of China
Han Yan-ben
Affiliation:
Beijing Astronomical Observatory, Academia Sinica, Beijing, People's Republic of China

Extract

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The description of the gravitational field at the surface of the Earth requires two quantities: the absolute value of the gravitational acceleration and the gravitational direction (deviation from vertical direction). At present, the various gravimeters measure the former quantity, and there is no effective instrument for monitoring the latter. This shortcoming seriously affects the comprehension and further knowledge of the gravitational field.

Type
Geophysics
Information
Symposium - International Astronomical Union , Volume 129: The Impact of VLBI on Astrophysics and Geophysics , 1988 , pp. 421
Copyright
Copyright © Reidel 1988