Changes in the earth's rotation by tectonic movements

Details Changes in the earth's rotation by tectonic movements Changes in the earth's rotation by tectonic movements

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20...81v&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 2, p. 81-84.

Physics

4

Earth Crust, Earth Rotation, Lithosphere, Polar Wandering (Geology), Rheology, Tectonics, Erosion, Topography

Scientific paper

We propose that lithospheric processes unrelated to postglacial rebound and taking place under nonisostatic conditions are able to induce nonnegligible influences on the earth's rotation. Examples of such processes are mountain building and erosion, foundering flexure of oceanic basins and lithospheric snapbacking resulting from detachment of subducting slabs. Lithospheric and crustal rheologies and intraplate stresses are the dominant factors in these mechanisms, contrary to the mantle rheologies which are assumed to dominate the process of postglacial rebound.

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