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Isostatic geoid anomalies on a sphereLong-wavelength geoid anomalies due to lateral variations in the density or thickness of a thin layer in local isostatic equilibrium on the surface of a sphere depend sensitively on the assumed state of stress within the layer. A number of common intuitive definitions of local isostasy generally believed to be essentially identical are associated with quite different states of isostatic stress, and the corresponding theoretical geoid anomalies can vary by more than a factor of 2. This sensitivity of the theoretical anomaly to the exact definition of local isostasy constitutes an obstacle to any proposed program of interpreting or exploiting observed global isostatic geoid anomalies such as those associated with the aging of the oceanic lithosphere.
Document ID
19820049110
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Dahlen, F. A.
(Princeton University Princeton, NJ, United States)
Date Acquired
August 10, 2013
Publication Date
May 10, 1982
Publication Information
Publication: Journal of Geophysical Research
Volume: 87
Subject Category
Geophysics
Accession Number
82A32645
Funding Number(s)
CONTRACT_GRANT: NSF EAR-79-19717
CONTRACT_GRANT: NAS5-25896
Distribution Limits
Public
Copyright
Other

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