Isostatic geoid anomalies on a sphere

Details Isostatic geoid anomalies on a sphere Isostatic geoid anomalies on a sphere

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.3943d&link_type=abstract

Journal of Geophysical Research, vol. 87, May 10, 1982, p. 3943-3947.

Physics

21

Anomalies, Geoids, Geomorphology, Integral Equations, Isostasy, Stress Analysis

Scientific paper

Long-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.

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