Geoid anomalies and the thickness of the lithosphere

Details Geoid anomalies and the thickness of the lithosphere Geoid anomalies and the thickness of the lithosphere

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.2381t&link_type=abstract

Journal of Geophysical Research, vol. 84, May 10, 1979, p. 2381-2387.

Physics

Geophysics

7

Density Distribution, Geoids, Geophysics, Lithosphere, Anomalies, Continents, Earth Crust, Error Analysis, Thickness

Scientific paper

By using accepted crustal density distributions and either error function or linear temperature distributions the difference in geoid height between stable continental areas and deep ocean basins has been determined as a function of the continental lithospheric thickness. If the continental lithosphere were greater than 200 km thick, the geoid anomaly over the continents would be systematically negative in relation to that over the ocean basins. By using the GEM 9 satellite geoid the mean geoid anomalies over ocean basins and stable continental areas have been obtained. No systematic difference between continental and oceanic geoids is observed. It is concluded that the thickness of the continental lithosphere is near 180 km. This is in good agreement with various interpretations of the surface heat flow observations.

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