New constraints on transient lower mantle rheology and internal mantle buoyancy from glacial rebound data

Details New constraints on transient lower mantle rheology and internal mantle buoyancy from glacial rebound data New constraints on transient lower mantle rheology and internal mantle buoyancy from glacial rebound data

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.318..614p&link_type=abstract

Nature (ISSN 0028-0836), vol. 318, Dec. 26, 1985, p. 614-617.

Physics

Geophysics

32

Buoyancy, Earth Mantle, Geophysics, Glaciers, Rheology, Constraints, Time Response, Transient Response, Viscosity

Scientific paper

A model of mantle rheology which has an explicit transient component of its relaxation spectrum is shown to reconcile two apparently conflicting inferences of lower mantle viscosity. If recent analyses of isostatic geoid anomalies are correct in requiring a large increase of viscosity wih depth, then the weak viscosity stratification demanded by postglacial rebound data implies the importance of such rheological behaviour, at least in the earth's lower mantle.

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