The influence of boundary heterogeneity in experimental models of mantle convection

Details The influence of boundary heterogeneity in experimental models of mantle convection The influence of boundary heterogeneity in experimental models of mantle convection

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.1929n&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 13, p. 1929-1932

Physics

6

Geodesy And Gravity: Earth'S Interior-Dynamics, Global Change: Solid Earth, Tectonophysics: Dynamics Of Lithosphere And Mantle-General, Tectonophysics: Dynamics, Convection Currents And Mantle Plumes

Scientific paper

Recent global seismological observations have revealed lateral variations in the thickness of the D'' layer. We have performed laboratory experiments to explore how undulations of various sizes in the D'' layer affect convection patterns. We find that topography on the lower boundary can induce plumes and that there is a critical height above which topography controls convection patterns. Observed undulations in the D'' layer exceed this critical height, suggesting that they may control mantle convection patterns.

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