EGS XXV General Assembly, Nice, France, April 2000

SE4.01 Mantle convection: Mantle convection and its boundary layers

Event Information

Mantle convection is known to be a boundary layer flow. Major gradients in temperature and velocities occur near the boundaries which enclose a relatively mixed interior. Processes at the boundary layers govern the dynamics of the flow and therefore hold the key for an understanding of the entire system. In the mantle convection system the lithosphere, the Core-mantle boundary and possibly the 670-km discontinuity form boundary layers of the convecting mantle. We observe the action of mantle convection mainly at lithospheric level . Plate tectonics and its relation to mantle convection is one of the central issues of geodynamics and tectonophysics. Plumes can only develop from thermal boundary layers and thus processes at the Cmb and/or at the 670km discontinuity are likewise of key-importance. Finally the coupling between the mantle and the core will be strongly influenced by the nature of the CMB and the processes taking there place. We would like to invite scientists sharing the interest in mantle dynamics and its relation to boundary layer phenomena. Topics include 'integration of lithosphere into mantle convection models", "the 670 km discontinuity and the CMB - what is the source of the plumes?" and " can boundary layers be regarded as chemical reservoirs

Preliminary List of Solicited Speakers

Co-Sponsorship