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Very-Long-Baseline Interferometry Applied to Geophysics

Published online by Cambridge University Press:  07 August 2017

W. E. Carter  and
D. S. Robertson
W. E. Carter
Affiliation:
Geosciences Laboratory Office of Ocean and Earth Science National Oceanic and Atmospheric Administration Rockville, MD
D. S. Robertson
Affiliation:
Geosciences Laboratory Office of Ocean and Earth Science National Oceanic and Atmospheric Administration Rockville, MD

Abstract

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Very-long-baseline Interferometry (VLBI) has opened for study a broad new spectrum of geophysical phenomena including: direct observation of the tectonic motions and deformations of the Earth's crustal plates, observations of unprecedented detail of the variations in the rotation of the Earth, and direct measurement of the elastic deformations of the Earth in response to tidal forces. These new measurements have placed significant constraints on models of the interior structure of the Earth; for example, measurements of the variations in the Earth's nutation have been shown to be particularly sensitive to the shape of the core-mantle boundary. The VLBI measurements will allow us to construct a global reference frame accurate at the centimeter level. Such a frame will be essential to studying long-term global changes, especially those changes related to sea-level variations as recorded by tide gauge measurements.

Type
Very Long Baseline Interferometry (VLBI)
Information
Symposium - International Astronomical Union , Volume 156: Developments in Astrometry and their Impacts on Astrophysics , 1993 , pp. 133 - 144
Copyright
Copyright © Kluwer 

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