Project

Back to overview

Mantle Convection: Heat flux scaling and plume dynamics and heat transport in a plate tectonics-like regime

English title Mantle Convection: Heat flux scaling and plume dynamics and heat transport in a plate tectonics-like regime
Applicant Tackley Paul
Number 112137
Funding scheme Project funding
Research institution Institut für Geophysik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Geophysics
Start/End 01.01.2007 - 31.12.2009
Approved amount 145'139.00
Show all

Keywords (5)

Mantle convection; heat tranport; heat flux; plate tectonics; slabs

Lay Summary (English)

Lead
Lay summary
Understanding how the surface and core-mantle-boundary (CMB) heat fluxes in Earth’s mantle convection-plate tectonics system scale with the relevant parameters is essential to understanding the thermal evolution of the mantle and core, a central problem in Earth science. While scalings for simple convective systems are well known, the presence of strongly temperature-dependent viscosity, plate tectonics, continents, a mixture of heating modes (basal, internal and secular cooling), and spherical geometry complicates the situation on Earth, making the top and bottom boundary layers asymmetric in both physical properties and heat flux. Here we propose to conduct focused studies of CMB and surface heat flux in a plate tectonic regime using the tool of large-scale numerical modeling in 3D spherical geometry. Particular attention will be paid to the heat transport and dynamics of upwelling plumes and how this is affected by the details of plate tectonic environment (e.g., plate length). The research will be the be performed over a 3 year period by a student at ETHZ and will form the basis of their Ph.D. dissertation.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Name Institute

Associated projects

Number Title Start Funding scheme
126773 Mantle Convection: Heat flux scaling and plume dynamics and heat transport in a plate tectonics-like regime 01.01.2010 Project funding

-