Investigating variations in the gravitational constant

In August–September 1987 a group of geophysicists, led by M. Ander of the Los Alamos National Laboratory and M. Zumberge of Scripps Institution of Oceanography, performed a geophysical experiment to determine the value of the gravitational constant, G. Using the DYE-3 borehole on the Greenland ice c...

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Bibliographic Details
Published in:Polar Record
Main Authors: Cooper, A. Paul R., Gorman, M.R.
Format: Article in Journal/Newspaper
Language:unknown
Published: Cambridge University Press 1989
Subjects:
Earth Sciences
Greenland
Scripps
Zumberge
Dye 3
Dye-3
Ice cap
Polar Record
Online Access:http://nora.nerc.ac.uk/id/eprint/521007/
https://doi.org/10.1017/S0032247400009992
Description
Summary:In August–September 1987 a group of geophysicists, led by M. Ander of the Los Alamos National Laboratory and M. Zumberge of Scripps Institution of Oceanography, performed a geophysical experiment to determine the value of the gravitational constant, G. Using the DYE-3 borehole on the Greenland ice cap, the experiment was intended to provide evidence concerning possible scale variations in G, and thus for non-Newtonian gravity. This report describes the background to the experiment and the radio echo-sounding survey carried out to provide terrain corrections for the gravity model. The experiment showed values of G differing from laboratory determinations by margins which considerably exceed experimental error.

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