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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
Extract
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.
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- Geophysics
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- Copyright © Reidel 1988