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Non-Newtonian gravity or gravity anomalies?Geophysical measurements of G differ from laboratory values, indicating that gravity may be non-Newtonian. A spherical harmonic formulation is presented for the variation of (Newtonian) gravity inside the Earth. Using the GEM-10B Earth Gravitational Field Model, it is shown that long-wavelength gravity anomalies, if not corrected, may masquerade as non-Newtonian gravity by providing significant influences on experimental observation of delta g/delta r and G. An apparent contradiction in other studies is also resolved: i.e., local densities appear in equations when average densities of layers seem to be called for.
Document ID
19880014734
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Rubincam, David P. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chao, B. Fong (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schatten, Kenneth H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sager, William W. (Texas A&M Univ. College Station., United States)
Date Acquired
September 5, 2013
Publication Date
June 1, 1988
Subject Category
Geophysics
Report/Patent Number
NAS 1.15:4030
REPT-88B0104
NASA-TM-4030
Accession Number
88N24118
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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